American John Isner broke the all-time record for serving aces on Friday early in his Wimbledon third-round match against Italian youngster Jannik Sinner.
Needing five aces to beat Ivo Karlovic’s leading mark of 13,728, the 37-year-old Isner sent three hurtling past Sinner in the first game and three more in the second.
The record-breaking delivery was clocked at 130mph.
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Isner, who stands six foot 10, served 36 while knocking out twice former champion Andy Murray in the previous round after which he spoke of his pride at being in a position to overtake Karlovic.
“It’s actually really cool. It’s something I’m really proud of,” Isner said. “I will be the all-time leader. I’ll keep playing, keep adding to my total… I don’t know if (the record) will get broken. I could be up there for a long time.”
The ATP began record-keeping in 1991.