Troy Matteson has pretty much been leading the John Deere Classic wire-to-wire, but Zach Johnson finds himself in the clubhouse and tied with Matteson at -20 for the lead after finishing his round with three birdies in his last six holes.
Matteson started the tournament with a 10-under 61 on Thursday and has never wavered, but couldn't close out Johnson. Matteson double-bogeyed the 15th hole, only to recover with a clutch eagle on 17 before sinking a par putt on 18 to clinch the playoff.
The playoff is sudden death starting on the first hole, a par 4. Johnson has played the hole one-under for the tournament, firing a birdie on Saturday. Matteson is at -2 on the first hole, shooting birdies on Thursday and Friday. They'll keep going until someone does something awesome, or someone does something terrible.
For a complete live leaderboard from the John Deere, visit Golf.com.