The 10 Fastest Serves in Tennis History

Sam Groth might not be the most well known name on the tennis circuit, but he certainly has a powerhouse of a serve. While this serve was fast enough, the Australian managed a staggering 163.4 mph (163 kmph) in the 2012 Busan Open. Groth, now aged 31, has retired from tennis, but I'm sure he can still band down a serve.

If you've heard of this man the it's likely for his gargantuan serve. The Frenchman, who is ranked 404 in the world clocked 160 MPH ( 257.5 KMPH) back in 2012. 2012 must have been a good year for big serving, because these numbers are just a joke. Imagine trying to get your racket on a 160 MPH serve.

The 6ft 10" American is one of the best servers on tour, so it's no surprise to see him near the top of this list. The current world number 9 managed to clock 157.2 MPH (253 KMPH) in the 2016 Davis Cup. It's amazing to think that at this kind of speed, Isner is still a full 6 MPH behind Groth's record breaking serve!

Another friendly giant on tour! at 6ft 11", Ivo Karlovic is one of few men who can look down on John Isner. Unfortunately for him though, he's got to look up to find Isner on this list. Karlovic clocked 156 MPH in the Davis Cup in 2011 to temporarily make him owner of the fastest serve in the world.

I see a bit of a theme developing here. Coming in equal 4th on the list is 6ft 8" Jerzy Janowicz. The giant Pole, who hit a career high 14 in the world racked up a 156 MPH (251 KMPH) serve back in 2012.

One of the greatest servers in tennis history, Andy Roddick comes in at number 6. The former world number one had a beast of a serve and he used it to great effect. Check out the video of him destroying Nadal with three aces in a row here!

Tied for 6th place with Roddick is Canadian Milos Raonic, who also clocked 155 MPH (249.4 KMPH). As you can see in this clip, he is more than capable of booming down an ace, as he gives Andy Roddick a taste of his own medicine. The Canadian still features heavily on tour and is currently ranked 14th in the world.

Another blast from the past, super Swede, Joachim Johansson smashed a 154 MPH serve back in 2004. Johansson was an ace machine and it would be interesting to see what kind of speeds he could have achieved with today's racket technology.

Spanish lefty, Feliciano Lopez was one player who I did not expect to see on this lift. Don't get me wrong, Feli hits a huge ball, but at 6ft 2", I've never thought his serve was that eye-catching. Nevertheless, I'm excited to see a fellow lefty on this list!

Now we're just getting slow.... only just over over 150 MPH (244 KMPH)! Marius Copil's biggest serve might be a full 13 MPH slower than Sam Groth's best effort, but it is still a monster of a serve. Here's how Copil broke the record for fastest serve at the Australian Open.