John Deere Classic defending champion Zach Johnson, right, confers with his swing coach, Mike Bender, before teeing off on the second hole during the pro-am for the golf tournament Wednesday, July 10, 2013, in Silvis, Ill.

John Deere Classic defending champion Zach Johnson, right, confers with his swing coach, Mike Bender, before teeing off on the second hole during the pro-am for the golf tournament Wednesday, July 10, 2013, in Silvis, Ill.