Rahm holds on for fourth win from six starts as he secures The American Express

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Jon Rahm has now won back-to-back PGA Tour starts after repelling the challenge of Davis Thompson at The American Express.

Rahm, who came from behind at the Sentry Tournament of Champions earlier this month, also closed 2022 with DP World Tour victories at the Spanish Open and the DP World Tour Championship, giving him four wins from his past six starts overall.

He came into the final round at PGA West's Pete Dye Stadium Course tied for the lead at 23 under, and after rounds of 64, 64 and 65, he closed with a four-under 68 to post a winning score of 27 under.

Rahm reached the 16th hole tied with Thompson for the lead, but he produced a clutch birdie on the par five while Thompson could only scramble for par following a wayward tee shot.

Thompson almost tied things up at the picturesque par-three 17th, but his 50-foot putt crashed into the flag stick and somehow stayed out.

There would be no late twists in the tale, as Rahm found the bunker with his tee shot on the last but followed it with a perfect approach, while Thompson did not leave himself a birdie putt.

The 23-year-old Thompson finished alone in second at 26 under for his best ever finish on the PGA Tour, while some terrific Sunday scores were posted to climb into the top 10.

World number six Xander Schauffele tied for the round of the day as he shot a 10-under 62 to climb into a share of third at 25 under. He was matched by South Africa's Erik van Rooyen, who also posted a 62 to finish tied for sixth at 23 under with rising South Korean star Tom Kim.