Just days after winning the 3M Open, Tony Finau has put together a terrific eight-under 64 to earn the position of joint-leader at the Rocket Mortgage Classic after the first round of play.

Finau came from five shots back on Sunday to lift this past weekend's trophy, and he kept that momentum going with a bogey-free round, birdieing three holes on the front-nine and five down the back.

He finished with the most strokes gained on approach shots (4.20 strokes gained), and was third in strokes gained off the tee (1.65).

Speaking to the media after stepping off the 18th green, Finau acknowledged his rich run of form, and the fact that it was the first round of his career where he had hit all 18 greens in regulation.

"I was riding the high off last week," he said. "I didn’t know that fact before today, that I haven’t hit all 18 greens, so to be able to do that here today is pretty cool."

The only other player at eight under is Canada's Taylor Pendrith, who had nine birdies, and then bogeyed the 18th hole to give up the outright lead.

That pairing is two strokes clear of the chasing field, with England's Matt Wallace and the American group of Michael Thompson, Webb Simpson, Cameron Champ and Lee Hodges all posting 66s.

There is strong international representation in the logjam tied for eighth at five under, including South Korea's Kim Si-woo, Thailand's Kiradech Aphibarnrat, England's Callum Tarren and Sweden's Henrik Norlander.

Australia's Cam Davis is one further back at four under, his compatriots Adam Scott and Jason Day are at three-under, while England's Danny Willett and strong major performer Will Zalatoris are flirting with the cut-line at two under.