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.'
Videos: Indian Wells 2012 Monday Highlights and Hot Shot
Watch the following tennis highlights from Indian Wells... Andy Roddick and Mardy Fish bow out in their third round matches Monday at the BNP Paribas Open, while defending champion Novak Djokovic and John Isner advance.
Plus, check out John Isner hits an unexpected volley winner against Juan Monaco in their third-round match and wins the Hot shot of the day honors ...
Federer advances at Indian Wells, faces Raonic next
Roger Federer beat Denis Kudla 6-4, 6-1 to advance to the third round at the BNP Paribas Open in Indian Wells.
Federer broke his opponent five times, won 70% of his second serve return points to win in just 57 minutes.
"I'm always relieved and happy when I am able to find my way into a tournament," Federer said. "So it's a good start for me. I didn't know Kudla very much, or at all, really, so it was a good win for me. I'm looking forward to what's next."
The Swiss will next play against Milos Raonic, who had no problems to beat Carlos Berlocq 64 62.
What a horrible day for Andy Murray at Indian Wells. The Scott was sent packing in the second round at the BNP Paribas Open after losing 64 62 to Guillermo Garcia-Lopez .
Murray had saved chances to break his opponent during the match but the Spaniard was in top form and saved them all. He also was able to break the world number 4 three times to claim the win.
"It's one of the biggest wins in my career," Garcia-Lopez said. "It gives me a lot of confidence, as my ranking right now is not too good, so I wanted to improve it. This victory gives me some confidence that I can do better this season."
BNP PARIBAS OPEN
Indian Wells, CA, USA
March 7-18, 2012
Sunday, March 11, 2012
Stadium 1 (from 11.00hrs)
1. ATP: Matosevic vs. del Potro
2. ATP: Mayer vs. Nadal
3. Victoria Azarenka vs. Svetlana Kuznetsova (NB 14.30hrs)
4. ATP: Tsonga vs. Llodra
5. ATP: Kudla vs. Federer (NB 19.00hrs)
6. Flavia Pennetta vs. Agnieszka Radwanska (NB 20.30hrs)
Stadium 2 (from 11.00hrs)
1. Angelique Kerber vs. Vania King
2. ATP: López vs. Baghdatis
3. ATP: Ferrer vs. Dimitrov
4. Petra Kvitova vs. Christina McHale (NB 16.30hrs)
5. ATP: Raonic vs. Berlocq
6. Jamie Hampton vs. Jarmila Gajdosova
Videos: Indian Wells 2012 Saturday Highlights and hot shot
Watch highlights of Saturday's play at the BNP Paribas Open, featuring Andy Roddick versus Lukasz Kubot, Novak Djokovic, Andrey Golubev, Albert Ramos, Richard Gasquet, Sergiy Stakhovsky, Tomas Berdych, Santiago Giraldo, Kei Nishikori, Andy Murray and Guillermo Garcia-Lopez.