Overnight leader Ryan Moore got off to a rocky start Sunday, following an opening birdie with back-to-back bogeys at Nos. 2 and 3.
But after quickly forfeiting his lead to Jordan Spieth, Moore rebounded in a big way at the par-4 sixth from 172 yards:
The eagle - combined with a Spieth bogey - resulted in a three-shot swing that allowed Moore to regain his lead. He exited the front nine in 1-under 35 with a two-shot advantage.