Who is leading the 2026 U.S. Senior Open in first round?

The 2026 U.S. Senior Open is underway in its first round at Scioto Country Club in Dublin, Ohio, featuring 156 participants including former major champions such as Ernie Els, Vijay Singh, Padraig Harrington, and Angel Cabrera. Harrington, a three-time major champion, enters as the defending champion having won the 2025 U.S. Senior Open. The tournament brings several notable names to Central Ohio, including Michael Block, who gained fame at the 2023 PGA Championship.