Fourth-seeded Agnieszka Radwanska held off American teenager Madison Keys to reach the fourth round at Wimbledon with a 7-5, 4-6, 6-3 win on Saturday.
Radwanska, who lost to Serena Williams in last year's final, needed five match points before sealing the victory when Keys sent a return wide. The American had erased four match points in the previous game and finished with 15 aces, but could not muster a comeback against the Pole.
Radwanska reached the fourth round for the sixth time in eight appearances at the All England Club.
The 18-year-old Keys was making her Wimbledon debut and was one of four American women to reach the third round.