American Scott Stallings seized a four-shot lead before darkness halted the third round of the rain plagued US PGA Tour True South Classic. Stallings shot to the top of the leaderboard on Saturday courtesy of four birdies and an eagle in his first eight holes and had an 18-under total through 10 holes of the third round at Annandale Golf Club. When the round resumes on Sunday morning, Stallings will be chasing a second US PGA Tour title. Heath Slocum, Billy Horschel and Jason Bohn were all at 14-under. Slocum had seven birdies and one bogey in his first 13 holes. Horschel and Bohn were both through nine holes, having shared a one-shot lead when the second round wrapped up earlier on Saturday. Horschel was leading the tournament after finishing his second round on Friday, but due to the bad weather Bohn had to come back with almost half the field the next morning to reach the 36-hole mark. Of the handful of players who finished the third round on Saturday, William McGirt posted an eight-under 64 for the lowest score in the clubhouse of 13-under 203.