Brian Davis and Louis Oosthuizen lead the Shell Houston Open as the sun sets on Friday play. The pair are in the clubhouse at 11 under through 36 holes.
Tommy Gainey, defending champion Phil Mickelson, J.B. Holmes, Jeff Maggert and Greg Owen sit two behind in third place.
John Huh, Jonas Blixt, Angel Cabrera and James Driscoll share eighth place on 8 under.
Second round play will complete Saturday morning before a cut is made at Redstone CC.