He is the vice president of sports nutrition at Medifast, and co-founder of the Gotham Lacrosse League.

[3] He began playing lacrosse in middle school for the Springfield Athletic Association, and moved on to the Springfield Cougars Lacrosse Club in high school, where he received All-American honors and was the All-Central League MVP.

[5] Sweeney attended Georgetown University's McDonough School of Business, where he was a three-time All-American long-stick midfielder.

[6] Academically, he was a double major in international business and marketing as well as minor concentration in sociology.

Sweeney anchored the defensive unit that helped the Barrage win the MLL championship in 2004, 2006 and 2007.

When the team folded in 2008, Sweeney moved to Washington Bayhawks for one game, then over to the Boston Cannons, which he led to win the 2011 MLL Championships.

[8] After a fifteen-year career, Sweeney announced his retirement from Major League Lacrosse on August 31, 2017.