Former U.S. Open champion Lucas Glover was among a four-way tie for the lead after day one of the ISCO Championship.
The PGA TOUR event at Hurstbourne Country Club counts on both the FedEx Cup and the Race to Dubai, with 50 DP World Tour members teeing it up at Hurstbourne Country Club in Kentucky.
Glover, who won his sole Major to date in 2009, carded a bogey-free 63 to get to seven under and share the lead with fellow Americans Troy Merritt and Steven Fisk and German Stephan Jaeger.
Swede Pontus Nyholm and American Chan Kim - who domianted days one and two last season before fading over the weekend - were then a shot off the lead.
Frenchman Jeong weon Ko was the highest-placed DP World Tour member in a group of six players at five under, one ahead of German Thomas Rossenmueller - fresh off a top ten at the BMW International Open - and Frenchman Romain Langasque.
The winner this week will secure full playing privileges on both the PGA TOUR and DP World Tour, with Vincent Norrman and Harry Hall both securing their DP World Tour cards by winning in recent seasons.
