Chris Kirk and Billy Horschel have both carded an opening-round 66 to share the lead at the Tour Championship in Atlanta tonight.
Both players shot bogey-free rounds and sunk four birdies apiece as the pair finished up on four-under-par after day one in Georgia.
Bubba Watson looked poised to join the duo on four-under, but a bogey at the last saw the two-time Major winner finish a stroke back.
Instead, Watson joined Patrick Reed, Jason Day and Jim Furyk in a four-way tie for second place.
Rory McIlroy ended up on one-under after shooting an erratic first-round 69 to leave him three shots off the pace.
A mixed front nine saw McIlroy record three birdies and two bogeys, before the four-time Major winner settled down and shot steady pars in seven of the back nine holes.
Shane Callaghan
