SAO PAULO, Feb. 13 (Xinhua) -- Following are the quarter-finalresults Friday from the ATP Brasil Open at Complexo DesportivoConstancio Vaz Guimaraes (prefix number denotes seeding):
Joao Souza, Brazil, bt 4-Leonardo Mayer, Argentina, 6-4, 3-6,6-3
Luca Vanni, Italy, bt Dusan Lajovic, Serbia, 7-6 (7-5), 7-6(7-4)
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