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.
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