Fleetwood played with eventual champion Justin Thomas in his opening two rounds at Quail Hollow previous year and says he learned "a few things" from watching the American on the way to his first major title.
Three different golfers - Patrick Reed, Brooks Koepka and Francesco Molinari - have claimed the first three majors of the year, so golf's fourth and final major is as wide-open as ever. "I was fresh, in form, going to a place where if I worked up the leaderboard I could create a lot of noise".
The 14-time Major victor finished second behind Paul Casey in the Valspar Championship in March and was in contention at Bay Hill the following week before driving out of bounds on the 16th hole of the final round. I knew if had decent tee shots on 17 or 18, they're both birdie chances.
"I was scripted to wear a dark blue shirt, so luckily I had a version of yellowish and I'm happy (I) could support Jarrod", Fowler said.
The electric yellow and orange outfits have been largely replaced but the objective remains unchanged with this PGA Championship representing Fowler's last shot at claiming a major before entering his 30s in December.
"I'm trying to work a few kinks out of my swing".
Tiger Woods, who led last month's British Open with eight holes to play, hasn't won a major in more than 10 years.
Marc Leishman is next best of the Australians at two under midway through his round, while former world No.1 Adam Scott is a shot back at one under.
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'But obviously getting in the winner's circle when it's been over a year is something that I obviously would like to do. I played in a lot of final groups and I haven't played well enough when it's counted.
"I kind of went out there today and had a very clear intent on what I wanted to do on every hole", he said.
"I'm a little under the radar this year, and I don't mind it", Spieth acknowledged, "but at the same time, this tournament will always be circled until hopefully I win it one day".
Englishman Tommy Fleetwood is a player who's seemingly in contention every week, yet he's still searching for his first victory on USA soil and his first major championship.
This marks his 22nd career major, and first since the 2016 Masters. "It's hard to put your finger on why I would have performed better in one event and not so much this one".
In 2015 it was Day or Spieth in the shootout with Spieth's FedExCup triumph and two majors making it clear by season end.
"I was lucky enough to be able to talk to him last Friday; one thing that helped was hearing how he felt".