Daly had his lowest score in his five-year career on the 50-and-over tour. The two-time major champion won his lone Champions title in 2017 in Houston.

"Just tired all the time, just something the doc told me I'd be," Daly said. "Trying to drink the right stuff, but it's hard to take Diet Coke away from me.

"I was proud of myself, I only smoked six cigarettes today. Usually I smoke about a pack and a half."

Daly eagled the par-five 18th - hitting a seven-iron to 12 feet - for a first-nine 31 on The Old Course at Broken Sound. He finished the round with a bogey on the par-four ninth.

"I just hit it really good," Daly said. "The bad drives that I did hit, I could find it, hit it. I just putted really, really good. ... The putter felt really, really good today and these greens are so good, that if you get on a little roll, it helps. You could see by the scores, a lot of low scores today."

The 50-year-old Furyk won this year in his first two starts on the senior tour. He birdied the last two holes and three of the last four.

"Just trying to put the ball on the fairway, put the ball on the green, give myself some looks and probably did my best putting there on the back nine and knocked in some putts that had a little bit of length to them, 10, 15, 20 feet," Furyk said.

Local favourite Bernhard Langer, the winner in 2010 and 2019, was a stroke back with Duffy Waldorf, Scott Parel and Robert Karlsson. Joe Durant and Brett Quigley shot 66.

"Finally made a few putts from medium distance or short distance," the 63-year-old Langer said. "Played pretty solid, maybe one loose drive here or there, but my irons were better today than most days."

Seventy-year-old Tom Kite bettered his age with a bogey-free 67 while Ernie Els had a 69.

Australians David McKenzie and Rod Pampling both opened with a three-under 69, one ahead of compatriot Stephen Leaney.

Australian Associated Press