Adam Scott proved in sensational style just why is the new world number one with a stunning playoff victory over US PGA champion Jason Dufner in Texas at the Crowne Plaza Invitational.
In doing so, he became the first man ever to win the 'Texas Grand Slam' having won the Shell Houston Open in '07, the Byron Nelson Classic in '08, the Valero Texas Open two years later and now this win at Colonial.
Ben Hogan, Sam Snead, Byron Nelson, Arnold Palmer, Gene Littler, Nick Price, Ben Crenshaw and Phil Mickelson, who are all legends of the game, fell one tournament short of that feat - making Scott's achievement all the more impressive.
Despite a weakened field due to the BMW PGA Championship running parallel to this PGA Tour event, Scott emphatically showed everyone watching that he can stand up to the pressure of being labelled the best as he fired a closing four-under 66 before birdieing the third extra hole to see off the supremely talented Dufner.
Swede Freddie Jacobsen finished in a tie for third one stroke back at minus eight, with his compatriot David Lingmerth a shot further back in tied-fifth.
Japan's Hideki Matsuyama and current FedEx Cup leader Jimmy Walker both secured top-10 finishes with closing rounds of 71 and 70 respectively. America's Dustin Johnson fired an impressive Sunday 66 to secure his place inside the top 15 at Colonial.
However, the headlines belong to Scott and rightly so after the Australian showed the guts and determination needed if you are to stay at number one in the Official World Golf Rankings. Geoff Ogilvy had previously stated his compatriot was the best golfer on the planet "by far" at the Players two weeks ago - on this showing, he was right.
Of course, Dufner finished in a tie for top spot with him, so it's not as if Scott ran away with it, but the way he battled against his opponent on the three extra holes was world number one-like. As was his response to a double-bogey on the ninth on Sunday. His flawless back nine of 32 got him into the playoff, and from then on, he didn't look back.
After both failed with birdie putts at the 18th - the first playoff hole - the second epitomised the beauty of a stroke-play tournament playoff. Despite hitting the better tee shot, Scott's nine-iron into the 17th left him with a downhill 14 footer. Dufner, with trees in his line of sight but not in play, stiffed his approach to five feet and at that point, it looked like it would be another near-miss in the search for a Texas Grand Slam winner.
But what followed is the difference between Scott the Masters champion, and the Scott that blew a four-shot lead with four to play at the 2012 British Open. He rolled the birdie putt in - firm as you like - and even though Dufner kept his composure to sink his birdie putt too, there was the sense there would be only one winner from here on in.
And it was Scott, thanks to yet another birdie at 18. In golf, so long as you keep making birdies, you aren't going to be beaten - Dufner had not played the playoff badly at all, Scott just played it better. And that's why he's world number one.
Henrik Stenson may yet usurp Scott next week at the top after his impressive finish at Wentworth, but for now, the world number one has retained his spot thanks to a sublime victory on the American circuit. It's not an often occurrence, Tiger Woods aside, that the world's number one golfer will win, simply because of the abundance of talent in every field week-in, week-out.
But seeing Scott hole a winning-birdie putt on the 18th at Colonial had an air of justification. He was officially handed the number one spot without picking up a club. One week later, he'd proven exactly why.