Scottie Scheffler beat Kevin Kisner to win the WGC-Dell Technologies Match Play and take the world number one ranking in the process.
He ends the 36-week stay of Spain's Jon Rahm at the top of the rankings after three tournament wins in 2022.
Scheffler, runner-up in the tournament last year, was too strong for fellow American Kisner and won 4&3 at Austin Country Club in Texas.
"I really don't know what to say," said an emotional Scheffler, 25.
"I'm just really pleased. It's a tough week, a long week. I figured out my routine to keep some energy. But I'm pretty worn out right now to be honest.
"It's a dream come true to play in front of my hometown fans here, going to school here. I have some good memories on this golf course, coming out to watch this tournament.
"I'm pleased to be playing in it, and even more happy to win it."
Victory will make Scheffler one of the favourites for the Masters, which starts on 7 April.
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