US Open champion Angel Cabrera is an early starter and cards a level-par 70 - 11 better than Thursday

Overnight leader Graeme Storm endures an up-and-down day, ending with a six-over 76 for one over overall

World number three Phil Mickelson is made to battle for his 69 and inches to two over

Open champion Padraig Harrington shoots five bogeys and two birdies for a 73, sliding back to two over

Englishman Ian Poulter is unable to launch a charge and slips back to four over with a 73

Canada's Stephen Ames feels the heat on another sweltering day in Tulsa

But Ames edges clear at four under before having to settle for a three under in the finish

Local star Verplank then birdies 17 to get to four under and leads on his own when Ames bogeys the last

Ireland's Paul McGinley is another big mover and matches Verplank's four-under 66 to rocket to level par

John Daly comes out all guns blazing but his cavalier approach misfires and he ends on 73 - level par overall

Tiger Woods launches a trademark charge and takes a share of the lead at four under after the 13th

Former US Open champion Geoff Ogilvy matches Tiger Woods as both players reach five under

But Tiger Woods proves to be in a class of his own as he surges to a two-shot lead with a sublime 63