|Coaching career (HC unless noted)|
|1991–1992||Loyola (Assistant Coach)|
|1994–1995||Navy (Assistant Coach)|
|1999–2005||Loyola (Assistant Coach)|
|Head coaching record|
|Accomplishments and honors|
He played for Loyola as a goalkeeper and helped bring them to the school's first NCAA final in 1990. He also played professionally for both the Baltimore Thunder and the original Boston Blazers, although he only played in three games during the two years he played.
As head coach of the Loyola Greyhounds, he led the team to win the NCAA D1 lacrosse championship on May 28, 2012, completing the year with an 18 and 1 record. The team's one loss was to Johns Hopkins. Toomey was named the 2012 winner of the F. Morris Touchstone Award as the Division I Coach of the Year.