Marcus Foster scored 22 points and Zach Freemantle added 15 while overcoming foul trouble as Xavier rallied past Texas 86-80 in the First Four on Wednesday night.
The Musketeers (22-11) erased a 13-point deficit in their biggest comeback win this season and advanced to play No. 6 seed Illinois on Friday night in a Midwest Region game at Milwaukee.
Tre Johnson led the Longhorns with 23 points in an NCAA Tournament matchup of No. 11 seeds. Tramon Mark scored 16.