Career
He has been the head coach of the Navy Midshipmen since the start of the 2006 season. Prior to Navy, he was the head coach at both Maine and Providence. With the three programs, Kostacopoulos has appeared in a total of five National Collegiate Athletic Association Tournaments.
Kostacopoulos played college baseball at Providence from 1984–1987.
Providence
After two seasons as an assistant at Providence, Kostacopoulos became the head coach for the start of the 1990 season. Kostacopoulos"s first postseason appearance came in the 1991 Big East Tournament.
Three future Major League Baseball players played under Kostacopoulos at Providence. John McDonald (1995–1996) and Keith Reed (1996) also played under Kostacopoulos.
Maine
Kostacopoulos left Providence to become the head coach of Maine for the start of the 1997 season.
He replaced John Winkin, under whom Maine had appeared in six College World Series. In his first four seasons as head coach (1997–2000), Maine finished higher than fourth in the America East only once. In his last five (2001–2005), the team did not finish lower than second and qualified for two National Collegiate Athletic Association Tournaments (2002 and 2005) by winning the America East Tournament in those seasons.
Navy
Kostacopoulos was hired as the head coach of Navy for the start of the 2006 season.
As of the end of the 2013 season, Navy has appeared in one National Collegiate Athletic Association Tournament under Kostacopoulos.
