Madison Keys makes a roaring comeback in the first set against Oleksandra Olinykova. The defending was two breaks down, trailing 0-4 at one stage but made a sensational comeback to take the game into a tie break, where she was again trailing 0-4. However, Keys held her nerve to take the first set.
Madison Keys beats Oleksandra Olinykova 7-6 (8-6) in first set
