Steven Bowditch didn't see Byron Nelson win coming

A humble Steven Bowditch put his Byron Nelson Classic win down to luck and momentum, as he made it back-to-back winning seasons on the PGA Tour.

Bowditch has finished in the top-10 three times in the past two years, for two wins - also prevailing at the Valero Texas Open in San Antonio - and a runner-up result at the Frys.com Open.

Put simply, Bowditch goes from zero - the same number of top-10 finishes he had this season before teeing off at TPC Four Seasons - to hero, as he streaked away from the field to win by four shots in Irving, Texas.

The Australian, 31, said he was lucky.

"No, not really. I didn't see it coming in San Antonio, either," Bowditch replied, when asked if he had expected a breakthrough victory.

"You start to see a few putts drop in and all of a sudden your name is around the top of the leaderboard and you just keep moving forward, use that wonderful word in sport - 'momentum' - and just hope it keeps coming with you."

Bowditch also refused to claim credit for his tee shot on 17, as it was bound for the water before finding the green and sitting within 15 feet of the pin.

"It was more, 'That was a bad shot, wasn't it?'" Bowditch said of his thoughts after the shot on the penultimate hole.

"I never thought it was my day. There's so many things that can happen out there. I wasn't sure really what Jimmy [Walker] was doing and then also Charley [Hoffman] I wasn't sure really what was going on out there.

"I guess the moment that you probably looking for was after I hit my tee shot down 18 and I knew about [the win being secure], then it was about done because I was only going to have a sand wedge in my hand."

Bowditch's win saw him join fellow Australians Jason Day and Adam Scott as winners of the event in the past eight years, and the Dallas resident said Texan conditions suited his countrymen.

"It was just one of those weeks, I guess, but most of the time it's dry and it's windy so I think that is a little bit of an advantage for Australians, so to speak," Bowditch said.

"It's just the way we grow up. But this week, I'm not sure, I guess everything clicked and it was my time to win."