Oscar Hirschkorn has been the head baseball coach at Fresno Pacific University since the program's inception (2006). In ten seasons he's led the program to a 319-213 all-time record, seven regional postseason appearances, three World Series appearances (NAIA and NCCAA) and back-to-back World Series championships (2014-2015).
The Sunbird baseball program has built a reputation for developing top-level talent and sending it to the next level. FPU has put 12 players into the professional ranks since the program's inception, including six players selected in the MLB Amateur Draft.
In ten seasons at FPU, Hirschkorn has coached 28 all-conference players, three conference/region pitchers of the year, two region players of the year, eight All-Americans, two national Gold Glove winners and one player who went on to reach the major leagues.
In September of 2011 Chris Schwinden made his major league debut with the New York Mets after earning Mets' minor league pitcher of the year honors and making the Triple-A All-Star Game. Schwinden, who was drafted in 2008, became Fresno Pacific's first big-leaguer in the program's young but successful history.
After serving as Senior Associate Athletic Director for four years, Mike Rupcich joins the FPU baseball coaching staff. He brings with him a wealth of experience as a player and a coach, having worked as the head assistant at Fresno State from 1976-2002.
While at Fresno State, he was the team's hitting coach, third base coach and recruiting coordinator. He was a part of 15 conference championships, 19 NCAA Regional appearances, and two College World Series teams. The Bulldogs compiled a 968-510 record during his tenure with the program and he would coach 25 NCAA All-Americans. Rupcich was inducted into the Fresno State Baseball Hall of Fame in 1996.
Rupcich played baseball at Arizona State from 1970-1972, spending time at shortstop, third base and catcher. As one of the team's most feared hitters, he helped the Sun Devils to a 144-41 record in his career, including a College World Series Runner-Up finish in 1972.
Bob Jacobsen rejoined the Sunbird staff in 2013.
An alum of Roosevelt High School, Jacobsen went on to play baseball at Fresno State. In his time at Fresno State, he was primarily a relief pitcher. He led the Bulldogs in ERA (2.72) in 1982 and in saves (8) in 1984. He ranks 3rd in career saves at Fresno State.
Jacobsen was drafted by the Los Angeles Dodgers in the 14th round in 1984. He played for three years in their organization.
He began his coaching career as an assistant at Clovis West High School. He then took over as head coach at Roosevelt High School, and later was the first head coach at Sunnyside High School. He is known as one of the best pitching coaches in the area.
Jacobsen was the Sunbirds' pitching coach for three seasons (08-10). In that time, he coached GSAC Pitcher of the Year and All-American Chris Schwinden, who went on to become the first FPU player to reach the major leagues. He also coached three All-Conference pitchers. His 2008 pitching staff led the GSAC in ERA, strikeouts and fewest hits allowed, and was 2nd in walks allowed. His 2009 pitching staff was 2nd in the GSAC in ERA and strikeouts, and led the conference in walks allowed.
Coach Jacobsen and his wife, Glenda, have two sons: Robbie and Jake.