Muscala, who finished with 16 points and 10 rebounds, including four offensive boards, sent the game into overtime with two free throws for the Bison (8-14, 3-3 Patriot League). Patrick Behan had 14 points and Darryl Shazier added 13 points and seven assists.
Bucknell took a 70-69 lead in overtime on a 3-pointer by Boon, who went 7-for-14 from the floor and 3-for-7 from beyond the arc. The Bison pushed their lead to four with 31 seconds to play.
A 3-pointer by Marquis Hall cut Bucknell's margin to one with 19 seconds left, but the Mountain Hawks (13-8, 4-2) would not score the rest of the way. Shazier and Muscala each hit two free throws to help the Bison pull away.
Hall led Lehigh with 21 points and C.J. McCollum added 20. McCollum