An alumnus of Eastern Connecticut State University, Trimper played baseball there from 1990 to 1992 and was a member of the Warriors' 1990 Division III national championship team.
[1] After he graduated from Eastern Connecticut in 1992, Trimper worked for two years as the associate head coach at Division III Wentworth.
[4][5][6][7][8] During Trimper's time at Manhattan, two of his players were named MAAC Rookie of the Year: first basemen Chris Gaskin in 2002 and Matt Rizzotti in 2005.
[9][10] When Maine head coach Paul Kostacopoulos left for Navy after the 2005 season, the school hired Trimper to replace him.
At the Chapel Hill Regional, Maine went 0–2, losing 15–7 to top-seeded North Carolina and 21–19 to third-seeded UNC Wilmington.
After a 29–22 regular season, the Black Bears swept through the America East tournament, defeating Binghamton, Stony Brook, and Albany.
[13][14] In 2013, Trimper got his 400th career win, and Maine won the America East's regular season championship before losing to Binghamton in the tournament finals.
Trimper made his second season(2018) at Stetson one to remember after leading the Hatters to a second-place finish in his inaugural run through the ASUN Conference.
Finished the 2018 season with a program record NCAA final RPI (7) Six Hatters were selected in the MLB Draft in June, including Logan Gilbert by Seattle, who was selected in the 1st round (#16 overall) Below is a table of Trimper's yearly records as a collegiate head baseball coach.
Conference tournament champion Below is a table of Trimper's records as a collegiate summer baseball head coach.