Okay, so I’ve been messing around with tennis stats lately, and I thought it’d be cool to figure out who really has the fastest serve in the game. It’s one of those things that always gets talked about, you know? Who can blast the ball the hardest?
First, I started digging around online to see what I could find. There’s a bunch of info out there, but it’s all scattered and some of it’s pretty old. But still, I found some interesting stuff. Apparently, a guy named Sam Groth, an Australian dude, served a ball at a crazy 163.7 mph! That’s like, 263.4 km/h for those using the metric system. He did this at some Challenger event, which is not like the biggest stage, but still, that’s insane. Then I saw that he also hit 147 mph at Wimbledon, which is more of a big deal.

Then, there’s this John Isner guy, who’s known for his big serve. I found out he cranked one out at 157.2 mph (253 km/h) during the Davis Cup back in 2016. This was his fastest serve.
Also, I stumbled upon some information about other big names like Rafael Nadal and Novak Djokovic. Nadal’s fastest was recorded at 135 mph (217 km/h) and Djokovic’s was 208 km/h. It is not super fast but still very impressive.
So, after looking at all this, I made a little list of the fastest serves I could confirm:
- Sam Groth: 163.7 mph (263.4 km/h)
- John Isner: 157.2 mph (253 km/h)
- Rafael Nadal: 135 mph (217 km/h)
- Novak Djokovic: 208 km/h (about 129 mph)
Conclusion
It looks like Sam Groth is the king of speed when it comes to serving. I mean, 163.7 mph is just ridiculous! John Isner is not that far with his 157.2 mph bomb. But seriously, these speeds are wild. It’s pretty cool to see how fast these guys can actually hit the ball.