After a last-second JaKobe Coles floater, the Horned Frogs advanced to the Round of 32.
TCU faces the 3-seed Gonzaga Bulldogs, who defeated Grand Canyon in their opener.
TCU has never won multiple NCAA Tournament games, but the Bulldogs have reached the Sweet 16 in seven consecutive seasons.
The Zags are #1 in adjusted offensive efficiency at KenPom,
leading the nation in effective field goal percentage (58.5%) and 2-point field goal percentage (58.9%) and Top-10 in three-point percentage (38.5%).
TCU, which leads the nation in fast break scoring, will struggle against Mark Few's team's turnover prevention.
The Frogs rank 334th in 3FG% (30.8%) and 32.9% on mid-range attempts outside of fast break and interior scoring.
Drew Timme, a Richardson Pearce graduate and three-time Consensus All-American Forward,
leads the Zags with 20 points, 7 rebounds, and 3 assists per game.