Venus Williams defeated Serena 6-7 (2), 6-2, 6-3 Saturday for the first win against her sister in more than five years to advance to the final of the Rogers Cup.
The 34-year-old Venus hadn't beat her 32-year-old sister in five matches going back to Dubai in 2009. Top-ranked Serena still leads the all-time series 15-11.
Unseeded Venus started with strong serving and took a 3-1 lead before Serena tied it 3-3. The younger sibling and defending champion prevailed in the tiebreaker, taking a 4-0 lead.
Venus, who dropped serve only once, served for the match at 5-3 in the third set. Venus won it with a rocket serve that Serena returned into the net.
Serena had 19 aces and nine double-faults, while Venus had six aces and two doubles-faults.