How many golfers have pulled off the feat of winning both the U.S. Senior Open and the Senior British Open in the same year? So far that count stands at just three. The U.S. Senior Open was first played in 1980, and the Senior British Open was first played in 1987. So only since 1987 has it been possible to pull off this impressive senior double. And it only took one year, until 1988, for the