This Day in Golf History: July 23

Mark Calcavecchia won a playoff with Australians Greg Norman and Wayne Grady on this date in the 1989 Open Championship at Troon (the course where Xander Schauffele just won the Open with a final-round 65). It was the first time the championship used a four-hole aggregate playoff to determine the winner. The three had tied at 13-under 275. Calcavecchia handily won the playoff at two under; Grady was one over and Norman's score was an X. Also, on this date in 1995, John Daly won the Open Championship at the Old Course in St. Andrews, also beating Costantino Rocca in a four-hole playoff. It was his second major victory. Two days earlier, two-time winner Arnold Palmer missed the cut in a final Open appearance.