Love, the U.S. Ryder Cup captain, fired a 2-under 68, while O'Hern carded a 67 and Merrick registered a 69 at TPC Southwind.
The trio grabbed the lead thanks to a tough round for reigning U.S. Open champion and world No. 2 Rory McIlroy, who came into the day with a lead at minus-7 but struggled to a 2-over 72 Saturday.
Beautician charged with giving client fatal silicone butt injection
Ohio bar shooting arrested, charged with murder