Jamal Webb's 19 points included the go-ahead basket with 1:24 left in North Dakota's 63-59 victory over Texas-Pan American in the Great West semifinals Friday.
The second-seeded Sioux (16-14) will try to repeat as tournament champions when they play fourth-seeded NJIT on Saturday.
Troy Huff had 17 points and five steals for North Dakota, which won its season-high fifth straight. Aaron Anderson scored 12 points, and Brandon Brekke added nine rebounds.
Brandon Provost made five 3-pointers and led the third-seeded Broncs (11-21) with 17 points. Jesus Delgado scored 13.
Trailing 23-17, the Broncs unleashed a 22-0 run that gave them a 39-23 lead early in the second half.
Texas-Pan American was up 44-36 when North Dakota replied with a 16-0 spurt, holding the Broncs scoreless for 7:23.
UTPA edged ahead 57-54 with 2:37 left, but Webb hit the next two baskets, and North Dakota led the rest of the way.