Brendan Steele tops the leaderboard after a shortened opening day at the Valeros Open in Texas.
Play was suspended due to darkness, but it was Steele - victorious here at the Texas Open five years ago - who finished on top thanks to a round of eight-under through 13 holes.
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Only half of the field were able to complete the round at the TPC Oaks Course, though, as a three-and-a-half-hour delay caused by rain brought play to an early halt.
England's Luke Donald also remains in contention after recording three-under par across 14 holes.