The Wolf Pack trailed by four early in an overtime period that featured 34 total points. Bamba posted a double-double with 13 points and 14 rebounds. The team faces No. 2 Cincinnati on Sunday in the second round. Nevada's got one of the more lethal offenses you'll see in the field, led by Caleb Martin and Jordan Caroline.
With the score 73-73, Roach II drew a foul while draining a 3-pointer for the Longhorns, converting it into a 4-point play.
Caleb Martin also had 10 rebounds and five assists.
After trailing 40-26 early in the second half, Nevada tied it on Caroline's foul shot.
On the ensuing inbounds by Texas - from under their basket and without a chance to set up a play because they were out of timeouts - Dylan Osetkowski tried to pass the ball to backup Jericho Sims, who replaced Bamba in the lineup.More news: North Korean minister in 'constructive' talks in Sweden
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Nevada erased a double-digit second-half lead by the Longhorns and fouled out Texas star Mo Bamba at the end of regulation.
The No. 7 Nevada Wolf Pack had a decent shot against the No. 10 Texas Longhorns heading into Friday's Round of 64 matchup, but then the game went to overtime.
Texas is playing in the NCAA Tournament for the 18th time in the last 20 seasons - it didn't make the Big Dance a year ago - but hasn't won a game in the tourney since 2014. In the second half, with Stephens finding a good shooting rhythm on the perimeter, both Martins attacking Texas' multiple uses of zone defense with dribble penetration and Caroline aggressively taking the ball on the dribble to Bamba, Nevada was able to rally from a 35-26 halftime deficit.
The first blunder came with 18.3 seconds to go with Texas still up by one point.
Texas: The Longhorns wait to hear whether Bamba, a potential lottery pick, will enter the National Basketball Association draft now that his freshman season's over.