The tennis Grand Slam is so rare that only five players can claim one, and no player at all has achieved the feat since 1988. The Golden Slam, winning all four majors and a gold medal in the same year, is nearly impossible. Only Steffi Graf had ever done it.
Until Sunday, when it was accomplished twice.
First came Diede de Groot of the Netherlands, who won the wheelchair competition at the U.S. Open to complete a sweep of the year’s four Grand Slam tournaments to go with her Paralympic gold medal.
Later in the day, Dylan Alcott of Australia completed the same feat in the men’s quad event.