Glover, who came into Saturday's round with a one-stroke lead, completed 54 holes at 14-under 202.
One of day's biggest moves was made by Kyle Stanley, who fired a 7-under 65 to share second place with Jimmy Walker (66), Billy Horschel (66) and D.A. Points (70) at 12-under 204.
Kevin Stadler charged into sole possession of sixth place at 11-under 205 with a 65.
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