BJ Ercolino began at Stony Brook as an Assistant Athletic Trainer in September 2006. Ercolino received her bachelor's degree in athletic training from High Point University in May 2003. She completed her master's degree in educational psychology and physical education at the University of Arizona in May 2005. While at Arizona, Ercolino was a graduate assistant athletic trainer for the sport club program, working with both men's and women's rugby, lacrosse, soccer, volleyball, water polo and ultimate Frisbee.

Ercolino has been a NATABOC certified athletic trainer since 2003 and became a NYS certified athletic trainer in 2005. Prior to her arrival at Stony Brook, Ercolino was the head athletic trainer at Suffolk County Community College Brentwood Campus, serving as the primary athletic trainer for all of the Longhorns athletic teams.

The primary athletic trainer for volleyball and women's lacrosse at Stony Brook, Ercolino also oversees swimming and diving. She is responsible for the overall maintenance and operation of the athletic training room, including designing and implementing rehabilitation programs for injured student-athletes. In addition, she is also is an Adjunct Instructor and an Approved Clinical Instructor in the Athletic Training Education Program.