He faced arm injuries during his senior season, but was signed by the Atlanta Braves after completing his college career.

He then moved to South Florida where he served as pitching coach, helping the Bulls to a conference title and ranking in the top 20 nationally in ERA in 1993.

He then moved to Georgia Tech where he served as the top assistant and recruiting coordinator, building a young pitching staff that would deliver two Atlantic Coast Conference titles in his seven seasons.

In 2004, he was named Western Athletic Conference Coach of the Year after leading the Rainbows to their second consecutive 30 win season.

Trapasso then led Hawaii to the 2006 NCAA Division I baseball tournament and a 45–17 record, a performance that landed him another WAC Coach of the Year award, along with several national honors.

[4] On February 6, 2017, University of Hawaii athletics announced a one-year contract extension for Trapasso, through the end of the 2018 season.