HUMBLE, Texas — Ian Poulter delivered another big moment Sunday, this one for himself.

Down to his last putt, Poulter made a 20-foot birdie on the 18th hole to force a playoff with Beau Hossler, and then he won the Houston Open with a par on the first extra hole to earn the last spot in the Masters.

One week after Poulter was mistakenly told he had locked up a spot at Augusta National through the world ranking, he left no doubt by winning with a clutch moment reminiscent of his Ryder Cup heroics from Medinah in 2012.

“I had to dig deep today,” said Poulter, who closed with a 5-under 67.

Hossler, who also shot 67, overcame a three-shot deficit with four straight birdies on the back nine. He had a chance to win on the 18th in regulation with a 30-foot birdie putt that trickled over the right edge of the cup.

That set the stage for Poulter.