Benzel, the second-round leader, opened the third and final round with three straight birdies. He finished the final round with a 5-under-par 67 and a tournament total of 14-under 202.
Pitt had the low round of the day at 8-under 64.
Benzel, who received the first-place prize of $8,650, and the next top seven finishers advance to the 46th PGA Professional National Championship on June 23-26, 2013, at Sunriver Resort.
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