SILVIS - American Daniel Summerhays fired a nine-under-par 62 to grab a two-stroke lead over Canadian David Hearn heading into Sunday's final round of the John Deere Classic. Defending champion Zach Johnson, the 2007 Masters winner and overnight co-leader, was lurking just off the pace another shot back at 16-under-par 197 after posting 67 at TPC Deere Run in the third round on Saturday. Summerhays, looking for his first PGA Tour win, had 10 birdies against a lone bogey in ideal scoring conditions, using a string of three in a row from the 15th hole to vault to the top of the leaderboard. "I think when I'm playing well the mentality is make as many birdies as you can," Summerhays told reporters. "I'm really looking forward to (Sunday). I'm playing really well." –Reuters