Trombino attended Princeton University where he was a history major. Princeton qualified for the
NCAA Men's Lacrosse Championship in three of Trombino's four years (2004, 2006 & 2007). As a freshman, Trombino was expected to be a midfielder, but he surprisingly earned a spot in the first team attack unit. He became the first Princeton freshman to score at least one goal in all 15 of his games (the prior record had been a goal in 10 different games). The team were Ivy League co-champions with
Cornell. As a freshman in the
2004 NCAA Division I Men's Lacrosse Championship, he scored an
overtime game-winning goal in a 9–8 quarterfinals victory over
Maryland that was set up by
Ryan Boyle. However, in the semifinals the following week against
Navy, Trombino's shot was stopped with eight seconds left in the 8–7 loss. In 2005, Trombino was Princeton's leading scorer. He was a second team All-
Ivy League selection. In March 2006, Trombino scored two goals and an assist in the defeat of
Johns Hopkins that ended the defending national champion Blue Jays' 17-game winning streak and 37-game (38 was the NCAA record)
home winning streak. In the game, he had to shift from attack to midfield in the second half when Mike Gaudio suffered a knee injury. The team finished the season as Ivy League co-champion with Cornell. In the
2006 NCAA Division I Men's Lacrosse Championship first round 11–8 victory over
UMBC Trombino scored two goals and had two assists. In the quarterfinals, Princeton was eliminated by
Maryland 11–6 in the subsequent game. As a senior, Trombino served as co-
captain of the 2007 team. He wrote his senior thesis on
The Influence of Sir William Johnson Among the Iroquois Indians. ==Professional career==