Zach Johnson shoots 66 to stay in the John Deere Classic hunt.

Johnson shot a 5-under 66 in the third round at TPC Deere Run and moved to 13 under for the tournament. The 50-year-old entered Sunday within striking distance as he chased a second John Deere Classic title.

Johnson opened with 64, followed with 70 and chose the PGA Tour event over the U.S. Senior Open. His last PGA Tour win came at the 2015 Open Championship.