SILVIS, IL - JULY 12: Zack Johnson of the USA applauds the gallery as he finishes his round during the final round of the John Deere Classic at TPC Deere Run held on July 12, 2009 in Silvis, Illinois. (Photo by Michael Cohen/Getty Images)
SILVIS, IL - JULY 12: Zack Johnson of the USA hits his second shot on the sixth hole during the third round of the John Deere Classic at TPC Deere Run held on July 12, 2009 in Silvis, Illinois. (Photo by Michael Cohen/Getty Images)
SILVIS, IL - JULY 09: Zack Johnson of the USA plays a shot from the rough during the first round of the John Deere Classic at TPC Deere Run held on July 9, 2009 in Silvis, Illinois. (Photo by Michael Cohen/Getty Images)
Tom Johnson during the second round of The John Deere Classic at the TPC Deere Run in Silvis, Illinois on Friday, July 13, 2007 PGA - 2007 John Deere Classic - Second RoundPhoto by Marc Feldman/WireImage.com
Zack Johnson during the first round of the John Deere Classic at TPC at Deere Run in Silvis, Illinois on July 13, 2006.Photo by Michael Cohen/WireImage.com
Zack Johnson during the first round of the John Deere Classic at TPC at Deere Run in Silvis, Illinois on July 13, 2006.Photo by Michael Cohen/WireImage.com
Zack Johnson during the first round of the John Deere Classic at TPC at Deere Run in Silvis, Illinois on July 13, 2006.Photo by Michael Cohen/WireImage.com
Zach Johnson drops a ball on the eighth hole as PGA rules official John Brendle watches during second-round competition March 4, 2005 at the Ford Championship at Doral in Miami.