Steffi won the Golden Slam in 1988 (Grand Slam plus Olympic gold), and SOY went to Hershiser.![]()
She is an all time great and not to diminish it, but at that time Steffi had little competition. Martina was done and Seles and Hingis were still kids. Serena is at an age when most women are done, but she is dominating. If she wins the US she should definitely get it, unless Spieth also completes the slam. In that case, they should share it, think Coaches K and Summitt were the last co-winners.