Stupor Saturday In 1984, the US Open adopted a model known as Super Saturday that was supposed to showcase a full day of tennis.  Ivan Lendl led off the inaugural super Saturday with a 3-6, 6-3, 6-4, 6-7, 7-6 win over Pat Cash.  Martina Navratilova then defeated Chris Evert 4-6, 6-4, 6-4 to win the…