Piercy leads rainy 3M Open by 4 after marathon third round


              J.T. Poston watches his tee shot on the 10th hole during the third round of the 3M Open golf tournament at the Tournament Players Club in Blaine, Minn., Saturday, July 23, 2022. (AP Photo/Abbie Parr)
            
              Callum Tarren, of England, lines up his putt on the first green during the third round of the 3M Open golf tournament at the Tournament Players Club in Blaine, Minn., Saturday, July 23, 2022. (AP Photo/Abbie Parr)
            
              Tony Finau walks off the green after his putt on the first hole during the third round of the 3M Open golf tournament at the Tournament Players Club in Blaine, Minn., Saturday, July 23, 2022. (AP Photo/Abbie Parr)
            
              Emiliano Grillo, of Argentina, watches his tee shot on the first hole during the third round of the 3M Open golf tournament at the Tournament Players Club in Blaine, Minn., Saturday, July 23, 2022. (AP Photo/Abbie Parr)
            
              Fans and tournament staff make their way off the course after play was suspended due to inclement weather during the third round of the 3M Open golf tournament at the Tournament Players Club in Blaine, Minn., Saturday, July 23, 2022. (AP Photo/Abbie Parr)
            
              Scott Piercy prepares to putt on the first hole during the third round of the 3M Open golf tournament at the Tournament Players Club in Blaine, Minn., Saturday, July 23, 2022. (AP Photo/Abbie Parr)
Piercy leads rainy 3M Open by 4 after marathon third round