Nadal beat Murray 6-4, 6-2, 3-6, 6-2. The 2nd seed needs 4 sets to overcome the 4th seed and advance to the finals.
Williams beat Wozniacki 6-2, 6-4. The 28th seed eases past the top seed to advance to the final.
Stosur beat Kerber 6-3, 2-6, 6-2. The ninth seed needs 3 sets to overcome Kerber.