George Kostelis is in his eighth year at Yale and his third as Brian Tompkins' full-time assistant. Kostelis spent five years serving as the goalkeeping coach and continues to work with the goalkeepers. During his tenure, he has helped guide the Bulldogs to an Ivy League title and a berth in the NCAA College Cup. Kostelis, a United States Soccer Federation "A" Licensed Coach and a National Soccer Coaches Association of America Premier Diploma recipient, has a wealth of coaching experience. He spent two years as an assistant women's coach at Connecticut, where he helped guide the Huskies to the NCAA quarterfinals. He also was the goalkeeper coach at Hartford in 1995. In addition to his duties at Yale, Kostelis is the national director for the SoccerPlus Goalkeeper School. He also serves as a goalkeeper coach for the Connecticut Olympic Development program and for the FSASoccerPlus Football Club. Kostelis, a 1994 Hartford graduate, was a three-time All-North Atlantic Conference goalkeeper for the Hawks. He earned All-New England honors in 1992 and is second in school history in career goals against average (1.05), fourth in shutouts (17.4) and fourth in minutes played (6,216). He helped lead the Hawks to their first two Division I NCAA Tournament appearances in 1991 and 1992. Against Virginia in a four overtime loss in the second round of the 1991 NCAA Tournament, he made 13 saves. Kostelis served as a co-captain of the 1992 team and was selected to play in the Collegiate Soccer Senior Bowl that year. He also was named the North Atlantic Conference Tournament MVP in 1992 and was an all-tournament selection three times. In addition, he was named to North Atlantic Conference Academic Honor Roll as a junior and senior. In 2007, Kostelis was inducted into the Hartford Alumni Athletic Hall of Fame. Following graduation, Kostelis went on to play professionally in Greece for Aiolikos FC from 1993-95.