With the world's top players competing in the Accenture Match Play Championship, this event gives unheralded players a chance for major success on the PGA Tour and the three co-leaders are all looking for their first win on the circuit.
Summerhays, who had the day's low round with a 6-under 65 at the Greg Norman-designed El Camaleon course, has finished in the top 25 only twice in 33 tour events.
The co-leaders stood at 8-under 134 with Owen turning in a 67 and Claxton, the first-round leader, shooting a 68.
Norman posted a 73 and missed the cut with a 152 total.
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