Diane, who averages 27.4 points per game, added seven rebounds and three assists for the Matadors. Terrell Gomez had 15 points and Jared Pearre added 10 points for CSUN (8-13, 3-2 Big West Conference).
UCSB trailed for most of the second half but cut its deficit to three — 69-66 — on Amadou Sow's 3-pointer with about five minutes remaining. CSUN quickly responded with a putback from Diane and 3-pointers by Brendan Harrick and Brown to lead 77-66 with 3:14 remaining. Lamine helped preserve the lead with two dunks, one on a three-point play.
Cal State Northridge plays at Cal State Fullerton on Saturday. UC Santa Barbara remains at home to play UC Riverside on Saturday.