[2] Stony Brook currently competes in the Colonial Athletic Association and plays its home games on Kenneth P. LaValle Stadium.

Stony Brook University first fielded a men's lacrosse team in the 1983 season at the NCAA Division III level.

Casagrande scheduled three Division I teams in 1986 and 1987, and Stony Brook defeated Ohio State 14–6 on March 21, 1987 at Huntington High School.

Under Espey, Stony Brook expanded its facilities, recruiting efforts, and strength of schedule in order to build the program.

By 1998, the program had achieved full funding status, allowing it to allocate the NCAA maximum of 12.6 scholarships for current athletes.

Tiffany left in August 2006 to accept the head coaching job at his alma mater, Brown University, going 18–13 in his two seasons at Stony Brook.

With a 4–3 record, Stony Brook beat Bryant 8–7 before running the table in America East play, going undefeated including a 15–0 clobbering at Albany and a 16–10 win over Vermont.

In front of 4,262 fans at LaValle Stadium, Stony Brook defeated Denver 9–7 in the First Round to advance to the national quarterfinals, improving to 13–3 with a nine-game winning streak.

In the quarterfinals, Stony Brook lost 10–9 to #1 Virginia, falling one goal shy of the program's first Final Four appearance.

[14] Stony Brook was ranked #5 in the USILA Coaches Poll heading into the season, and was unanimously picked to finish in first place in the America East.

The Seawolves blew an early lead and lost 11–10 in overtime but recovered to win their next three games over Marist, Delaware, and St.

[17][18] Stony Brook was then shocked on the road, falling 9–8 to unranked Towson before losing to #10 Cornell at home in a 17–9 blowout.

Sitting at 3–3, Stony Brook would go undefeated in America East play for a second straight year to end the regular season at 8–3 as the No.

A month after the season ended, Sowell announced his resignation in the middle of his contract to accept the head coaching position at Navy.

The season continued to spiral downward as Stony Brook would embark on a four-game losing streak, suffering home defeats to St. John's and Towson and road stumbles at Siena and Bryant (in 2OT).

At 1–7, the Seawolves' season looked bleak, but they won the first three conference matchups to build momentum before falling to #20 Yale and Hartford, both one-goal losses in overtime at home.

In the First Round of the 2012 NCAA Division I Men's Lacrosse Championship, Stony Brook lost 19–9 to Johns Hopkins in Baltimore to end the season at 7–10.

Stony Brook's 10–2 start was a new program best, but back-to-back home losses against Lehigh, 12–11, and #6 Duke, 17–11, halted momentum after the five-game winning streak.

Stony Brook then won the final three games of the regular season, with two overtime wins, to head into the America East Tournament at 12–4.

Stony Brook tied the program record for wins in a season, ending 13–5, but missed the NCAA Tournament for a third straight year.

In 2019, the Seawolves struggled initially, losing to #4 Penn State, Marist, Sacred Heart, and Hartford to bring their record to 3–4.