Underdogs Smalley & Springer Shock Field

Alex Smalley and Hayden Springer established a significant lead at the Zurich Classic, matching a tournament record with an impressive 58 in better-ball play. This performance places the American pair six shots ahead of the English duo of Matt and Alex Fitzpatrick, who carded a 64 on Thursday.

In contrast, the experienced pairing of Shane Lowry and Brooks Koepka struggled, shooting a 66. They find themselves outside the top 40 and facing potential elimination from the tournament unless they can significantly improve during Friday's alternate-shot round. The tournament's unique format alternates between better-ball and alternate-shot play throughout the week.

Other notable teams include Davis Thompson and Austin Eckroat, who are one shot off the lead after a strong performance featuring an eagle and eight birdies. Two teams are tied for third at 60, while Billy Horschel and Tom Hoge are among a seven-way tie for fifth at 61.