Baseball Coaches

Mark Yoshino

Head Coach

Mark YoshinoCoach Mark Yoshino enters his twenty-first year as Head Coach and twenty-sixth year of coaching overall at Bellevue. Yoshino was fortunate to take over a team that had only one losing season in over 30 years. In a day and age where coaching turnover is high at all levels, the consistent success of the baseball program is partly due to the coaching stability at BC. Yoshino follows a short list of baseball coaches at Bellevue, which includes Jim Harryman, Ray Washburn, Bob Albo, Jim Johnson, and his predecessor, Mike Kanzaki. During his tenure at Bellevue, Yoshino has played an active role in the growth of the program to a national scale. The team has been ranked nationally on a regular basis ( #43 in 2012, #8 in 2011, #18 in 2007). Since his inception into Bellevue College athletics in 1994, Yoshino has helped over 180 players move on to continue playing baseball and furthering their education at four-year colleges, set a school record for most wins in a season, and increased net fundraising revenue by 50%.

Yoshino has been very involved on the community service front as well. He has been involved with helping youth baseball leagues on the eastside from the Little League to American Legion level. His commitment to the eastside baseball community is evident by his attendance at youth baseball games in addition volunteering time to numerous coaching clinics as well. Yoshino has also helped cultivate several facility development projects for Courter Field along with an increase in the number of student-athletes graduating with a two-year degree while playing baseball at the college. The team is currently graduating approximately 90-95% of their sophomores, which is a major success for athletic programs at the community college level. Yoshino has coached 38 players who were drafted by professional teams. He has had twenty-five pitchers drafted since his inception in ’94 with fifteen signing professionally in the last nine years including Adrian Sampson, who was the highest junior college pitcher selected in the country in 2012.  Sampson was promoted to the major leagues for the Seattle Mariners and made his debut at Fenway Park against the Boston Red Sox. His escalation to the big leagues took only four years. Yoshino has had four pitchers in the major leagues. Blaine Hardy, a left-handed relief pitcher for the Detroit Tigers, was a member of the 2007 NWAC champion team, Yoshino’s first. Hardy’s big save in the semi-final game vs. Skagit Valley helped propel Bellevue to the title.  The pitching success and development of pitchers has remained a constant factor for all of the Bellevue teams. Most notable of the pitcher achievements year in and out is their increase in stock; whether it be for the professional draft or college opportunities. With his coaching experience, playing experience as a pitcher, and advanded degrees in the biomechanics field, the development of the pitchers is one of the greatest accomplishments that isn’t directly reflected by championships on paper.

His first year not only was successful by his own terms, but also was one of the best seasons ever in school history. Yoshino earned North Region Coach of the Year honors for assembling a region championship club. In addition to the team setting a school record for wins, Yoshino felt that the program’s greatest accomplishments that year were individual, as ten of twelve second-year players earned a degree. In addition, nine of those were recruited by and placed into four-year college baseball programs. The ’02 season will also go down in Bellevue history as one of the greatest teams for their 34-14 record and runner-up finish at the NWAC Championships. Bellevue finished with the number one ranking in the NWAC Coaches’ Poll in ’02 as Yoshino was named Coach of the Year.

2007 was one of the greatest as far as the team goes, but was another success for Coach Yoshino’s primary goals: graduation and moving on to a four-year institution. 13 players from the team went to four-year colleges while 9 of them received their transfer degree. A final national ranking of 18th along with winning the school’s first NWAC Championship in over 28 years was just icing on the cake.

In 2009, the team captured their second NWAC Championship in three years. The team had two junior college All-Americans, two players in the Major League draft, and fifteen players continuing on to play at the four-year level (with nine receiving scholarships to division one universities). Yoshino was named Coach of the Year by the American Baseball Coaches Association for the Pacific Association Division (all community colleges in Washington, Oregon, and California).

2011 was memorable as well. In addition to capturing their third NWAC title in the last five years, the squad was ranked #8 in the nation and had three players selected in the Major League Amateur draft.

A 1987 Interlake HS grad, Yoshino accumulated several accomplishments as a pitcher in both high school and college. As a junior, Yoshino sported a 0.60 ERA for the 24-1 Saints, who captured the class AAA state championship in addition to a final ranking of 16th in the nation by U.S.A. Today. The following year, Yoshino earned All-KingCo honors. Yoshino then took the mound at Edmonds CC, compiling a two-year record of 12-1 for Coach Bill Stubbs. In 1989, Edmonds finished second in the NWAC with a 40-6 record, one of only three teams to win 40 games in the history of NWAC baseball. Yoshino was named recipient of the Art Feiro Award (first and only Edmonds CC athlete to ever receive this honor), which is presented annually to the top scholar-athlete in the NWAC.

Yoshino spent one season as pitching coach at Edmonds CC, where his staff sported the lowest team ERA (2.40) in the NWAC. He is a regular clinician-speaker at several events in the region including the Pemco All-Sports Clinic, American Baseball Coaches’ Association, and the Pacific Northwest (NW Star) Coaches’ Convention.

Yoshino earned his master’s degree from Pacific Lutheran University in exercise science/athletic administration. He graduated with honors and a 3.9 G.P.A. In 1993, he obtained his bachelor’s degree in exercise & sport science from Western Washington University. He was selected by the faculty at Western as the Outstanding Graduating Senior and Physical Education Major of the Year for graduating with a 4.0 G.P.A. Yoshino also served an internship at the Philadelphia Phillies spring training site in Clearwater, FL. Yoshino earned the Certified Strength and Conditioning Specialist title, which is recognized by university athletic and professional sport organizations as the credential to work with elite athletes at either level. His academic credentials in the athletic performance field coupled with playing experience provide Bellevue players a reputable and trustworthy coaching foundation for incoming recruits.

Yoshino’s academic and professional credentials in the health & fitness field have given him the opportunity to also work at the college as a full-time tenured faculty member in physical education and health. He is also the former chair of the NWAC Executive Board. Given his experience in the NWAC administration end, Yoshino is also a consultant for the BC student-athletes on athletic-academic transferability for those moving on to the NCAA or NAIA levels. He is a recipient of the Dutch Triebwasser Award, given annually to the conference’s top administrator. He is the only person in the NWAC to win the conference’s top honor as a student-athlete (1989), coach (2007, 2009, 2011), and administrator (2013). Although mostly known for his hard work on the baseball diamond, Yoshino is just as proud of his efforts ‘in the classroom’ – as a student, instructor, and administrator. To Yoshino, these accolades are the true reflection of his efforts at serving as a positive role model for the players at Bellevue. Recruits, their parents, four-year coaches, and professional scouts have frequently tabbed his varied contributions as the recipe for success, and perhaps the most reliable and stable force in a predominantly volatile coaching culture in the NWAC.  His promotion of sportsmanship while still demonstrating success in a competitive college athletic environment has been recognized by his peers. His commitment towards enhancing the image of Pacific Northwest baseball is also evidenced by his active role on the Baseball Committee and NWAC representative for the Pacific Association Division (all California, Oregon, and Washington 2-year colleges) of the American Baseball Coaches’ Association. Yoshino and his wife Lisa have two children Quinn (11) and Molly (9) and reside in Renton.

David Olson

Assistant Coach

David OlsonCoach David Olson begins his fourth year with the Bulldogs and has recently been appointed the title of Associate Head Coach after moving on from the Volunteer Assistant Coach position at Campbell University in North Carolina, an NCAA Division 1 school in the Big South Conference. Olson continues to take more and more on in the Bellevue program with his dynamic ability to work harmoniously with Yoshino in every aspect of the program. Olson is coming off a summer in which he was Bellevue’s recruiting coordinator and also was in charge of scholarship distribution; a major task and perhaps the only assistant in college baseball who was delegated that authority. Olson also is responsible for heading up the offense, coaching hitters and running the offense from the third base box. He will also do defensive specialist work with the first basemen and outfielders. Olson will also assist with the upkeep of Courter Field; one of the finest natural surfaces left in the region. Olson has prior experience in turf management from his days at Campbell. At Campbell, David was in charge of coaching outfield and assisting with hitting instruction. The team earned a conference tournament berth hoisting a 32-25 season record. The team hit at a .297 average, slugging percentage of .406, and a .364 on base percentage. David also coached Campbell’s center fielder, Cedric Mullins, (2015 13th round draft pick by the Baltimore Orioles) and left fielder, Cole Hallum, (NCAA All-American).

Prior to Campbell, David coached at the University of the Cumberlands as a Graduate Assistant while working on a Masters of Arts in Teaching. He worked with corner infielders, hitters, and coached base running for the team. Additionally, David was in charge of west coast recruiting which involved recruiting the states of Washington, Oregon, and California. Being a native of the Pacific Northwest, David spent much time recruiting the NWAC. In 2014 the team went on to a 31-23 record reaching a Mid-South Conference tournament berth.

Olson began his playing career at Auburn High School, graduating in 2008. He was a four-year letterman and led his team to the state playoffs all four years. As a sophomore, he was an All-South Puget Sound League (SPSL) third baseman and earned honorable mention as a pitcher. He batted .471 with 33 RBI and had a 3.38 ERA as a pitcher. As a Junior David was an All-SPSL first baseman and honorable mention pitcher, batting .400 with a 1.81 ERA on the mound. As a senior, Olson collected All-SPSL First Team, Seattle Times Star Times, and Tacoma News Tribune All-Area, and All-State honors. He was also rated the 175th best player in the country coming out of high school by

His collegiate career started at Washington State University where he redshirted the 2009 season due to an arm injury. He then transferred to Tacoma Community College. While at Tacoma, Olson was named to the Western Region All Star Team and was named First Team Utility NWAC as a sophomore and helped Tacoma reach the NWAC Western Region finals. During his sophomore season with the Titans in 2011, he topped the squad with five saves and recorded a 1.86 ERA. At the plate, he appeared in all 40 games, knocked in a team high 34 RBI’s (12th overall in NWAC), batted .318 with 41 hits including seven doubles and four home runs. Olson’s big numbers as a hitter were also reflected by his .465 slugging percentage and a .431 on-base percentage.

Continuing his playing career at Campbell University, David helped his team to two consecutive seasons of 40+ wins, including a 49 win season in 2013. Additionally, he collected Second Team All-Big South and College Sports Madness All-Big South First Team both years, 2012 and 2013. In 2013 he was one of twelve nationwide finalists for the NCAA Division 1 John Olerud Two-Way Player of the Year Award. He also earned Capital One Second Team Academic All-American and All-District by CoSIDA, College Sports Information Directors of America. He was named NCCSIA First Team All-State, as he tied a school record with 59 games played and ranks third in Campbell’s career hit by pitch list with 40. Olson gathered 19 multi-hit and 11 multi-RBI games and reached base in 17 consecutive games. He posted a career .349 batting average with 81 RBI’s, 86 runs, 143 hits, 30 doubles, 8 home runs, a triple and 4 stolen bases in 113 games. He also gathered a career 2.13 ERA and was ranked fifth in the Big South in batting, second in on base percentage, sixth in runs scored and first in times hit by pitch.

David graduated from Campbell University in Buies Creek, North Carolina with an undergraduate degree in Business Administration, and has also already completed his Master of Arts in Teaching.

Jerad Casper

Assistant Coach

Jerad CasperJerad Casper begins his second year on staff with Bellevue, but will be an everyday coach controlling the first base box in games for the first time this spring. He serves as Bellevue’s specialty infield coach and offers the mentorship to the BC players as an established player in high school, earning Seattle Times Star Times honors, an NWAC championship ring won here in 2011, and a member of the College World Series bound Oregon State University Beavers in 2014.

Casper lettered three years for head coach Russ Hayden at Tahoma High School. He earned all-South Puget Sound League honors all three years in addition to being named All-State and his team’s most valuable player.  As a senior, Casper put up astronomical numbers, batting .507 with 39 RBI and 13 home runs.

Casper played two years for Bellevue College, helping Bellevue win championship rings and a national ranking in 2011. Casper popped out eleven home runs as a freshman. Two notable home runs were in pre-season against the San Francisco Giants minor league squad and in post-season, a first inning homer in the NWAC title game which gave the Bulldogs momentum as they cruised to the title.  He batted .297 as a freshman, driving in 34 with 11 home runs, 10 doubles and 19 walks. and was part of the NWAC record team that clubbed over 55 home runs as a team using wood bats which was second in the nation behind Howard JC (TX) who went 55-0 that year. Casper’s power bat and defensive wizardry at third base earned him scholarship offers from Oregon Strate, Hawaii, and Oklahoma among others before picking the Beavers. He earned second-team North Region as a sophomore and first-team defense North Region honors as a freshman …

At Oregon State, Casper played in 29 games, starting 20 at third base. He had four doubles and 11 RBI. The squad went to Omaha, qualifying for the NCAA College World Series during his senior year. Due to an injury to the Beavers’ regular first baseman, Casper was transitioned to first base during his senior year. With no experience at that position, Casper made perhaps the most memorable defensive save in the Pac-12 that year that is commonly replayed on YouTube.

Craig Parthemer

Assistant Coach

Craig Parthemer begins his third year on staff at Bellevue. Although this is Parthemer’s initial stint at the college level, there is perhaps no one with more local experience at the high school level. Craig was the Head Coach at Sammamish HS in 2004 and 2005.  The Totems earned KingCo playoff berths during both years.  In 2004, he coached Sammamish to an 11-7 record and third place finish in KingCo 3A after team had won only three games the prior year.  He was selected the Seattle Post-Intelligencer (now merged with Seattle Times) Puget Sound Area Baseball Coach of the Year in 2004.  He resigned from Sammamish in 2005 to concentrate more efforts towards following the progress of his son T.J., who was entering the high schools ranks as a premier player in the state.

Following TJ’s local playing journey, Craig began coaching high school again in 2009 as a  Varsity Assistant Coach at Eastside Catholic HS through the 2010 season.  He then moved to Mount Si HS as a Varsity Assistant Coach from 2011 to 2013.  In 2011, he helped coach Mount Si to the 2011 Washington State 3A Baseball State Championship for Head Coach Elliott Cribby, who is now the pitching coach at Seattle University.  Mount Si also won three straight KingCo 3A Tournament Championships, reached the regional finals in 2012, and a fourth place finish at State in 2013. Parthemer was also a Varsity Assistant Coach at Bellevue HS in 2014. The team won KingCo 3A regular season title. His local eastside journeys then took him to the position of Varsity Assistant Coach at Interlake HS 2015 and 2016.  The Saints qualified for KingCo 3A Tournament in 2016.

Craig has been well established in the youth summer ball circuit as the Head Coach of the Boys of Summer program (sponsored by Poulsbo RV) from 1999 to 2004.  Team changed sponsors to become Baden Baseball Club in 2005.  He was an assistant with Baden 2005 and 2006.  He returned again in 2010 with Boys of Summer.  He was an Assistant Coach with 18U in 2010, 2011, 2012, 2013, and 2016, and was Head Coach at 15U in 2014, and 16U in 2015.

Parthemer has helped coach five current or former Major League players, 22 MLB drafted players, and over 70 Division I players. Most notable famous players of Parthemer under are current Major Leaguers Tim Lincecum and Jason Hammel. Parthemer’s extensive experience with high level players and longevity have made him an excellent resource for helping hundreds of players move on to college baseball.

Craig was a former All-KingCo football and baseball player at Sammamish HS.  He was Team Captain in baseball, and won the Blocker/Tackler award in football.  He was nominated for National Football Foundation Scholar/Athlete award.  His summer ball days were spent under the legendary Coach Bob Albo (member of the state coaches’ hall of fame) with Memorex Legion.  He played baseball at the University of Washington from 1980-82.  The Huskies won Northern Division of the PAC-10 in 1981.  He played three years of Semi-Pro Baseball in Western International League 1980-82, playing for the league Champion Cheney Studs in 1982.

Parthemer has been married for 34 years to wife Joni, who works at Swedish Hospital.   His son T.J. (27) lives and works in New York City as an analyst with a Private Equity firm.  He is a former Bellevue College player (2009-10) who transferred to Cornell University.  TJ played on the 2012 Ivy League championship baseball team at Cornell and pitched in the 2012 NCAA Tournament at the regionals in Chapel Hill, NC.

Craig has been an Insurance agent for 34 years and currently co-owns a brokerage firm.




Last Updated March 25, 2019