While never really doing enough to feature at TPC Sawgrass the young Kentuckian rallied with weekend scores of 68 and 66 to finish in a tie for eleventh place. With Johnson unable to break par during Sunday's play, the conditions were ripe for a change at the top of the men's game for the first time since February 2017.
We thought that to celebrate a first new World Number One in golf for the last 64 weeks we would pull together a few of Thomas' highlights since first obtaining his card for the 2015 PGA Tour golf season. Here's what we've come up with:
First professional win - CIMB Classic (Nov 2015)
Some golfers have to wait a fair while for their first win on either of the main professional Tours but, after threatening to break his duck at few events earlier in the year, Justin Thomas managed to get over the line at the CIMB Classic in Kuala Lumpur, Malaysia back in 2015.
He announced himself to the world with a one-shot victory over the 2013 Masters champion Adam Scott.
59 at The Sony Open (Jan 2017)
Joining the '59 Club' is a pretty great feat and it's one that Thomas achieved at the 2017 Sony Open.
Posting an 11-under-par score during his second round by playing flawless golf from start to finish would help the then world no.8 to a second win on the PGA Tour in as many weeks - and his fourth since turning pro.
PGA Championship 2017
And then there's the big one....
Back in August 2017, Thomas bridged the gap from being an impressively solid Tour player with multiple wins under his belt to become a major champion by securing a two-shot victory over compatriot Patrick Reed.
What a performance!! What a guy!!
Catch the PGA Champion being presented with the Wanamaker Trophy after Sunday's play in North Carolina:
2017: Wins, Accolades and Awards
As well as breaking his major duck in 2017, four other wins during the year at the SBS Tournament of Champions, the Sony Open in Hawaii, the CJ Cup @ Nine Bridges and the Dell Technologies Championship helped Thomas dominate the PGA Tour last year.
He would walk away with both the PGA Player of the Year and PGA Tour Player of the Year accolades, as well as leading the prize money standings and winning the FedEx Cup.
We wonder if he'd have expected such success back when he was just a boy. Check out some footage from JT's junior golfing days below:
World Number One (May 2018)
After several solid performances this year so far (including a win at the Honda Classic in February) Thomas usurped the 2016 U.S. Open champion Dustin Johnson from his seat at the top table of professional golf. How long can he hold on to the world number one spot? Only time will tell.
The Golf.com guys discuss that very subject, and more, below:
How long do you think JT can stay at the top? Who might be the next world number one? Let us know below.
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