Rory McIlroy, Scheffler or DeChambeau
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Spieth, 31, shot a final-round 62 to finish tied for third at the CJ Cup and spark belief that his game is rounding into form.
Finally free from the burden of chasing a career Grand Slam, Rory McIlroy is a hot favourite at this week's PGA Championship in Charlotte, North Carolina, where Scottie Scheffler and Bryson DeChambeau are both looking for a third major triumph.