Sixth seed Alexander Zverev had to come back from two sets down to beat qualifier Oscar Otte 3-6 3-6 6-2 6-2 6-0 in his opening round of the French Open.
Zverev was outplayed in the first two sets, struggling to find any rhythm against his German compatriot but his experience and fitness came through eventually winning the last three sets comfortably.
The world number six said after the match that he was impressed by Otte, but that ultimately he was able to adapt his game and outlast his opponent who is ranked 152.
"It's the first time I played Oscar so I didn't know what to expect much but he didn't give me any rhythm," Zverev said in his on-court interview.
"And to be honest I feel like, to beat a top player in a Grand Slam, especially in the first few rounds, this is exactly how you should play.
"I couldn't find my rhythm. In the third set I decided to hit the ball a little harder, hit the forehand a little heavier as well and managed to turn it around.
"Maybe he was a little bit more tired than me. Maybe he is not used to these kind of intense matches. But he played incredible and I hope he will continue playing this way."
The match is Zverev's seventh five-set match at Roland Garros, with the German winning all seven, and he says this experience was a big factor.
"I have done it before, this is what helps me the most. In the first two sets he was killing me," said Zverev.
"I am happy with the turnaround win, I am happy to be through and most happy that I have two days off now instead of one. In the end it will also help me."
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