Photo by Travis David | Sullivan junior Isabelle Harris follows through on the jumper in the second half Tuesday night. Harris netted a career-best 10 points in the Lady Arrows' win at Bloomfield.

BY TRAVIS DAVID [email protected]   BLOOMFIELD — Behind most successful teams is a player who emerges from under the radar and provides significant contributions to the team throughout the year.   The Sullivan girls basketball team may have found their X-factor.   For the second straight game, junior Isabelle Harris…