A tennis serve is the shot that starts every single point, and for some players, it’s also their most powerful weapon. The fastest serves in tennis history travel so quickly that the player receiving them has only a fraction of a second to react, sometimes even less time than it takes to blink.
Serve speeds are measured using radar guns, which are positioned behind the server to get an accurate reading. Interestingly, the sport’s official governing body, the Association of Tennis Professionals (ATP), doesn’t fully recognize serve speeds recorded at smaller, lower-level Challenger tournaments, since the radar equipment used there is not always the same as that used at the bigger ATP events.
Top 5 Fastest Tennis Serves Ever Recorded
So, let’s learn about the five fastest serves ever recorded in men’s tennis history.
| Player | Fastest Serve Speed (km/h & mph) | Tournament | Location |
|---|---|---|---|
| Sam Groth | 263.4 km/h (163.7 mph) | 2012 Busan Open Challenger | South Korea |
| Albano Olivetti | 257.5 km/h (160.0 mph) | 2012 Internazionali di Bergamo | Italy |
| John Isner | 253.0 km/h (157.2 mph) | 2016 Davis Cup | USA |
| Ivo Karlović | 251.0 km/h (156.0 mph) | 2011 Davis Cup | Croatia |
| Jerzy Janowicz | 251.0 km/h (156.0 mph) | 2012 Pekao Szczecin Open | Poland |
1. Sam Groth
This remains the fastest tennis serve ever recorded, by a wide margin. Sam Groth, an Australian player known for his powerful serve, unleashed the record-breaking shot during a second-round match against Belarusian player Uladzimir Ignatik.
Remarkably, Groth actually broke the previous world record more than once during that same match by hitting his all-time best serve at a speed of 263.4 km/h. The heartbreaking thing was that even after his best serve, he still lost the match.
Groth retired from professional tennis after the 2018 Australian Open and later went on to become a politician in Australia.
2. Albano Olivetti
Standing at 6 feet 8 inches tall, French player Albano Olivetti used his height to generate enormous power on serve, cracking the 160 mph barrier during a Challenger event in Bergamo, Italy, in 2012.
Like Groth’s serve, this one is not officially recognized by the ATP since it also happened at a Challenger-level tournament.
Olivetti has built most of his career around doubles rather than singles, reaching a career-high doubles ranking of world No. 21 in 2026, and remains an active professional player today
3. John Isner
This is the serve that holds the official ATP tour-level record, since it was measured at a top-level event rather than a Challenger tournament. John Isner, an American player famous for his imposing height and huge serve, fired this thunderous delivery during a Davis Cup first-round tie against Australia’s Bernard Tomic.
John Isner was also involved in the longest match in tennis history, a marathon first-round encounter at Wimbledon in 2010 that lasted over 11 hours. He retired from professional tennis in 2023.
4. Ivo Karlovic
Croatian player Ivo Karlovic stood an enormous 6 feet 11 inches tall, one of the tallest players in professional tennis history, which allowed him to generate a difficult-to-return serve trajectory. He held the official ATP tour-level record for the fastest serve before Isner surpassed him in 2016.
Ivo retired from professional tennis in 2021, having built a long career almost entirely around the strength of his exceptional serve.
5. Jerzy Janowicz
Polish player Jerzy Janowicz matched Karlovic’s speed with this booming serve at a Challenger tournament in his home country in 2012. That same year, Janowicz went on an unexpected run to the final of the ATP Masters 1000 event in Paris as a qualifier, defeating several top-20 players along the way, though that famous run is a separate achievement from his record-tying serve, which happened earlier in the year at the smaller Szczecin event.
Janowicz has since retired from professional tennis and now competes in padel.
Also Read: Top 5 Men’s Tennis Players With Most Weeks At World No. 1
