Novak Djokovic beat Yibing Wu 6-4 5-7 6-4 6-4 in the first round of Wimbledon.
What happened?
The match lasted three hours and 17 minutes, with Djokovic saving all six break points he faced in the fourth set.
Djokovic, 39, had not played since his third-round exit at the French Open to Joao Fonseca.
He displayed remarkable dexterity on the grass, stretching into splits to return Wu's shots.
Why it matters for Novak Djokovic
Djokovic's win sets him up for a potential record 25th Grand Slam title and eighth Wimbledon crown.
The Serbian athlete has been optimistic about his preparation for Wimbledon.
What comes next?
Djokovic will face his next opponent in the second round, looking to build on his winning start.
He admitted that he "should have lost" the fourth set but Wu was unable to take his chances.
Djokovic said on court: "It felt really challenging today, Wu deserves a round of applause for his incredible performance."
The crowd's loud rumblings of "Wuuuu" sounded like boos but were actually recognition of Wu pushing Djokovic to a closer match.
Djokovic's experience of playing on the Wimbledon court helped him manage the situation.
He will look to combine his experience with a fresh body to achieve the winning formula.
The match was a tough start to Wimbledon for Djokovic, but he is through to the next round.
Djokovic's next match will be closely watched as he aims to make history at Wimbledon.