MONTREAL -- Venus beat Serena in an all-Williams semifinal in the Rogers Cup.
Venus topped Serena 6-7 (2), 6-2, 6-3 on Saturday in the hard-court event for her first victory over her sister since 2009 in Dubai.
The 32-year-old Serena, ranked No. 1 in the world for the 200th career week, leads the series 14-11 and had won the last five matches. The 34-year-old Venus is ranked 26th.
In the second semifinal, third-seeded Agnieszka Radwanska faced Ekaterina Makarova.
Unseeded Venus started the match strong on her serve and took a 3-1 lead, but Serena rallied to tie it at 3 and went on to take the set in a tiebreaker.
Venus dominated the second set, breaking Serena's serve twice and taking advantage of unforced errors.
Serena made two errors and dropped serve to fall behind 4-2 in the third set. Venus, who dropped serve only once in the match, served for the win at 5-3. Venus hit a rocket serve on her third match point that Serena returned into the net. Serena had 19 aces and nine double faults, and Venus had six aces and two doubles faults.
Serena was coming off a victory last week in Stanford, California, in her first tournament since withdrawing from a doubles match at Wimbledon because of equilibrium problems.