Freshman Kevin Pangos scored 27 points and Gonzaga beat No. 16 Saint Mary's 73-59 on Thursday night to avenge an earlier loss to the West Coast Conference leader.
The win kept alive the hopes of Gonzaga (19-4, 9-2) to win its 12th consecutive regular season title, the second-longest streak in Division 1 history after UCLA's 13 straight.
But the Zags will need somebody to beat Saint Mary's (22-3, 11-1), which saw its 12-game winning streak snapped. Their last loss was Dec. 22 to No. 6 Baylor.
Rob Sacre and Gary Bell Jr. each added 12 points for Gonzaga.
Matthew Dellavedova had 20 points for Saint Mary's, which shot 38 percent from the field.