Russell Henley delivered a masterclass in precision golf Thursday, firing a breathtaking 9-under 61 to claim a two-stroke lead over world number one Scottie Scheffler at the Tour Championship in Atlanta.

"I couldn't have asked for a better start," Henley might say after his flawless opening round that included seven birdies and an eagle without dropping a single shot.

The stunning performance at East Lake Golf Club puts Henley in early control of the season-ending FedExCup Playoffs finale, where Scottie Scheffler entered as the overwhelming favorite to defend his title. Scheffler, fresh off his victory at last weekend's BMW Championship, now finds himself playing catch-up despite strong pre-tournament odds of +150.

Unlike last year's format, this year's Tour Championship features all 30 qualified golfers starting at even-par, eliminating the staggered start system. This levels the playing field considerably, giving Henley's opening salvo even more significance.

Three-time FedExCup champion Rory McIlroy (+850) stands as the only other golfer with odds better than 10-1, while Tommy Fleetwood sits as the third betting choice at +1200 after his T-4 finish at the BMW Championship alongside Sam Burns (+2800).

Interestingly, bookmakers seem less enthusiastic about FedExCup standings No. 3 J.J. Spaun (+3300) and No. 4 Justin Rose (+4500), despite their high positions in the season-long race.

With three rounds remaining, can Henley maintain his advantage against golf's elite? The pressure mounts as the chase for the FedExCup reaches its climax.