Zach Johnson carded a six-under 64 on Thursday to position himself one shot off the lead at the John Deere Classic, making his decision to skip three majors pay off. The 50-year-old, competing in his first season on the PGA Tour Champions, closed with an eagle from off the green and a birdie to join the day's contenders. Johnson, who won this event in 2012, is seeking to build momentum on the senior tour where he already has two victories.

Lucas Glover and Zac Blair share the early lead at seven-under 63, despite both ranking outside the top 100 in the FedEx Cup standings. Glover, destined for the PGA Tour board next year, overcame shoulder surgery this season to post a stellar round. British golfer Matt Wallace sits at four-under after a solid 67, coming off a runner-up finish at the Italian Open last week. The field features 20 players at 66 or better, indicating strong scoring conditions.

Johnson emphasized his personal connection to the event, stating he feels like a "long-distance son" to the area. His partnership with John Deere and comfort level showed in his clutch finishing stretch. Meanwhile, Jordan Spieth struggled with a double bogey and bogey on the final holes, carding a 69 to sit further back in the field.

The leaderboard reflects competitive golf across multiple tours, with veterans and rising players mixing it up. For Johnson, this represents an opportunity to extend his success on the PGA Tour Champions while maintaining his PGA Tour exemption through strong performances.