Kevin Streelman's red-hot putter sees him lead the Valspar Championship

His seven-under-par 64 gave him a one-shot lead over fellow American Kevin Roy.

Using a new ball marker to help with alignment that required approval from the United States Golf Association before teeing off, Streelman needed just 24 putts.

He birdied all four of the par fives on the Copperhead Course at Innisbrook Resort.

"I knew today was going to be solid and then it's going to be hold-onto-your-shorts here for the next few days," said Streelman, as per pgatour.com. 

"So trying to just keep a good attitude and have some fun. It's kind of cool little new ball marker I’m using that is legal that can kind of give you some visual cues that I think is pretty helpful. I was using that today, which I think kind of helped, as well."

China's Carl Yuan, Canada's Adam Svensson and America's Peter Malnati are tied for third on 66.

"Definitely had a little different mindset," quipped Yuan. 

"My wife called me this morning, told me about the birthday, so she said the only thing I'll do is have fun on the course. Don't come out here to do golf swings, just play golf. That's what I did. Yeah, it worked out pretty good."

The opening round was postponed due to a lack of light with France's Paul Barjon and America's Kevin Dougherty yet to complete their rounds.