MIAMI, March 29, 2011 (AFP) - Results on Tuesday from the eighth day of the $9 million ATP and WTA Masters Series hardcourt tournament (x denotes seed):
Men
4th rd
David Ferrer (ESP x6) bt Marcel Granollers (ESP) 6-1, 6-2
Mardy Fish (USA x14) bt Juan Martin del Potro (ARG) 7-5, 7-6 (7/5)
Tomas Berdych (CZE x7) bt Florian Mayer (GER) 6-3, 2-6, 7-6 (7/4)
Kevin Anderson (RSA) bt John Isner (USA x30) 6-3, 7-6 (7/4)
3rd rd
Oleksandr Dolgopolov (UKR x21) bt Jo-Wilfried Tsonga (FRA x15) 6-7 (2/7), 6-4, 7-5
Women
Quarter-finals:
Andrea Petkovic (GER x21) bt Jelena Jankovic (SRB x6) 2-6, 6-2, 6-4
4th rd
Kim Clijsters (BEL x2) bt Ana Ivanovic (SRB x19) 7-6 (7/4), 3-6, 7-6 (7/5)
