2nd seeded Petra Kvitova booked herself a place in New Haven final after overpowering Italy’s Sara Errani 6-1 6-3.
The Czech 2011 Wimbledon champion looked impressive throughout the match and after taking the first set in a mere 24 minutes, she took Errani’s serve twice more in the second set to sail to a comfortable victory.
Kvitova, who won the 2012 Rogers Cup title in Montreal and reached the SFs in Cincinnati, has already secured the top spot in the US Open series, and she could potentially be awarded up to $1 million in bonus on top the prize money she will receive at this year’s US Open.
Maria Kirilenko advanced to the final after Caroline Wozniacki had to retire due to a knee injury when trailing 7-5.
The Russian leads 4-2 in the head to head against Kvitova, having beaten her in the quarterfinals of the 2012 London Olympic games.