Steve Stricker and Sean O'Hair combined for a 15-under-par 57 to take the lead after round one of the QBE Shootout at Tiburon Golf Club in Florida.
The American duo birdied seven of their first eight holes in the scramble format and finished with a flourish as well thanks to an eagle at 17 and chip-in from Stricker for a final birdie at 18.
They lead by a shot from Keegan Bradley and Brendan Steele while it's a further stroke back to Bubba Watson and Brandt Snedeker.
The duos of Billy Horschel/Jason Dufner, Kevin Kisner/Kevin Chappell and Gary Woodland/Daniel Berger are all four off the pace on 11-under.
Both Stricker and O'Hair have won the Greg Norman-hosted tournament before although with different partners.
"We struck the ball really well and Steve made a tonne of putts and the finish really helped us," said O'Hair, who won this event with another veteran, Kenny Perry, in 2012.
Stricker is playing the event for the tenth time and he took victory with Jerry Kelly in 2009.
"I think it was just a good all-around team effort today. We really gelled well together, we paired well together," said Stricker.
"First time we ever played together as a team but it seemed very easy. We're good friends and the combination of us both seemed really easy together."
The 54-hole stroke-play event continues with greensomes in round two before the closing fourballs on Sunday.
O'Hair and Stricker are 1.001 to win the QBE Shootout, with Bradley/Steele 1501.00, Snedeker/Watson 501.00 and Chappell/Kisner 601.00.
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