Naples - Zimbabwe's Nick Price and American Mark Calcavecchia combined for a nine-under par 63 effort to share the lead on Friday after the opening round of the $3 million Franklin Templeton Shootout.
Americans Brendan Steele and Keegan Bradley, the latter who won his first major title in August at the PGA Championship, matched Price and Calcavecchia on 63 after the opening round of the three-day, 12-duo event.
Price aced the par-3 12th hole and sank a 30-footer for birdie to conclude the round while Bradley and Steele charged late, going seven-under on the last six holes.
Americans Jerry Kelly and Steve Stricker, the 2009 winners, were one stroke off the pace after the first round with US prodigy Rickie Fowler and Colombia's Camilo Villegas on 65 and Americans Jason Dufner and Sean O'Hair fifth on 66.
Australian Greg Norman, who captained the Internationals in their loss to the Americans in last month's Presidents Cup at Melbourne, and American Scott McCarron were 11th on three-under after 18 holes.
McCarron was a fill-in for Sweden's Fredrik Jacobson, who withdrew due to torn left thumb ligaments.