Estonian Kaia Kanepi upset top seed Simona Halep 6-2 6-4 in the first official US Open match in the new Armstrong Stadium, marking the .
Sporting the Nike Fall Slam Dress that was launched by Eugenie Bouchard and others in qualifying, the world No.1 Halep recovered from a double break down to 4-4 in the second set, but the world No.44 Kanepi broke her serve again, for the fifth time in the match, and celebrated victory when Halep sent a forehand long on match point.