Daniel Summerhays carded a four- stroke lead after three rounds of the Mayakoba Golf Classic at Riviera.
Summerhays completed 54 holes at 12-under-par 201. He will go for his first PGA Tour title on Sunday.
Chris Stroud shot a three-under 68 to move into second place at minus-10.
Will Claxton, who held at least a piece of the lead after the first two rounds, managed a one-under 71 Saturday. He dipped into a share of third with Michael Allen (66).
Greg Owen, who shared the second-round lead with Summerhays and Claxton, stumbled to a two-over 73. He fell into a tie for seventh at minus-six.
MORE TO FOLLOW.