Groth recorded fastest serve at 263kph
Sam Groth hit the fastest recorded serve in professional tennis, a 263kph ace in a Challenger event in South Korea.
Groth, ranked 340th, produced the serve in a second-round match against Uladzimir Ignatik in Busan.
While the ATP does not officially recognize serving speed records because of the variance in radar guns it confirmed "the event was using approved equipment, and that other data gathered appeared within a normal range."
Groth (@samuelgroth on Twitter), tweeted after the match: 'Lost 4&3 average! Did hit a 263kmh serve though in for an ace.'