Stefan Edberg, the defending champion and top seed, came back from a poor start to advance to the third round of the Association of Tennis Professionals Championship on Wednesday. However, fourth-seeded Pat Cash was eliminated by Gary Muller, ranked 173rd in the world.

Meanwhile in Livingston, N.J., top seeds Andre Agassi and Slobodan Zivojinovic are relying on strong forehands in early rounds of the $125,000 Mennen Cup. The top-seeded Agassi beat Libor Pimek of Czechoslovakia 6-4, 6-3, and second-seeded Zivojinovic beat Leif Shiras 6-4, 6-4.