Jordan Spieth is kicked out of the WGC-Dell Technologies Match Play Championship following his loss to Shane Lowry.
The three-time major winner needed to win his final Group 12 match to keep his hopes of progressing in Austin alive.
But the already eliminated former Open champion Lowry took a five-hole lead before hanging on to win 2&1.
Canadian Mackenzie Hughes beat Taylor Montgomery 6&4 to set up a play-off with the American to decide which player will reach the last 16.
American Max Homa was the first player to secure his place in the knockout stage before hitting a knockout, as opponent Hideki Matsuyama was forced to forfeit with a neck injury.
Elsewhere on the final day of group matches, world number one Scottie Scheffler and third-placed Rory McIlroy both control their respective groups after back-to-back wins.
But world number two Jon Rahm and English US Open champion Matt Fitzpatrick is both counting on other results.