Nate Funk added 19 points and four assists and Nick Porter had 15 points and six assists for the second-seeded Bluejays (22-10), who won the conference tournament for the sixth time in nine seasons.

Jamaal Tatum had 21 points for Southern Illinois (27-6), which has won the regular-season title five times in the last six seasons but has won only one tournament title during that span. The loss ended a 13-game winning streak for the Salukis.

The Valley's regular-season champion hasn't won the conference tournament since 1998.

Creighton lost twice to Southern Illinois by a total of five points during the regular season. Sunday's victory ended an eight-game losing streak against the Salukis.

Tolliver earned his first double-double in 10 games and sixth of the season, taking advantage of a poor game by Southern Illinois' Randal Falker. Tolliver personally outscored Southern Illinois 8-2 during a 3-minute span to put the Bluejays ahead 47-34 with 11:22 to go.

Falker, who averages 12.8 points, scored only three on 1-for-5 shooting. He missed everything on one free throw attempt, then barely made it to the rim on two misses with 2:36 to go and a chance to narrow the gap to six. He fouled out with 2:19 left.

Southern Illinois, which entered the game with an RPI rating of 4, cut the gap to five on Tatum's basket in the lane with 49 seconds to go, but Creighton went 3-for-4 from the line the rest of the way.