Sports · Ranked by ball speed

Fastest ATP Serves in the World (2026)

This list is serve speed on the ATP Tour and in the Davis Cup. John Isner leads at 253 km/h, also 157.2 mph, at the 2016 Davis Cup against Bernard Tomic. FOX Sports, Sportskeeda and Tennis Companion print 253. Companion says the ATP recognizes that serve as the fastest official ATP serve.

4 rankedA source on every row

Post

4 ATP serves, ties share a rank.

1
John Isner
Fastest ATP-recognized serve · 2016 Davis Cup
253km/h157mph70.3m/s137kn2.4× cheetah
OfficialFOX Sports (opens source in a new tab)
2
Ivo Karlović
Davis Cup doubles serve · 2011
251km/h156mph69.7m/s136kn2.4× cheetah
OfficialSportskeeda (opens source in a new tab)
3
Milos Raonic
SAP Open semifinal serve · 2012
249.9km/h155mph69.4m/s135kn2.4× cheetah
OfficialSportskeeda (opens source in a new tab)
4
Andy Roddick
Davis Cup serve · 2004
249.4km/h155mph69.3m/s135kn2.4× cheetah
OfficialATP Tour (opens source in a new tab)

Ivo Karlović is 251 km/h, also 156 mph, in Davis Cup doubles against Germany in Zagreb in March 2011. Sportskeeda, ABC and Guinness print 251. Milos Raonic is 249.9 km/h, also 155.3 mph, against Ryan Harrison at the 2012 SAP Open. Sportskeeda, Tennis Companion and Wikipedia print 249.9. Andy Roddick is 249.4 km/h. His ATP bio times one serve at 155 mph in a 2004 Davis Cup tie. Tennis Companion and Wikipedia print 249.4 km/h for that 155 mph.

Sam Groth's Challenger ace is not a row. Guinness prints 263 km/h (163.4 mph) on 9 May 2012 in Busan. FOX prints 263.4 km/h and Tennis Companion prints 263.4 km/h (163.7 mph). ABC reports that the ATP does not officially recognise serving-speed records because radar guns vary. Janowicz's 251 km/h at a Challenger is not a second 251. Four serves stay under the index gate.

How we measure

Ball speed

Serve speed in kilometres per hour on the ATP Tour or in the Davis Cup, the figure the cited pages print. A mile-per-hour conversion of that figure is the same serve. An ATP Challenger reading is not this list.

Isner is 253 km/h at the 2016 Davis Cup. 253.0 km/h and 157.2 mph are that serve.
Karlović is 251 km/h in March 2011. Raonic is 249.9 km/h at the 2012 SAP Open. Roddick is 249.4 km/h, the ATP bio's 155 mph in 2004.
Sam Groth's Challenger ace is not a row. Guinness prints 263 km/h and other pages print 263.4.

What the labels mean

Official: Ratified by a governing body such as the FIA, World Athletics or Guinness World Records.
Verified: Independently measured and published, for example in a peer-reviewed study or with certified timing.
Claimed: Stated by a manufacturer, owner or publication without independent timing.
Estimated: Calculated or approximated rather than directly timed.
Disputed: Contested by experts or contradicted by other evidence.

How we verify every figure

Speed race

See the top two side by side at true relative speed, over 100 m or any distance.

Race #1 vs #2

The lineup · 4 on file

Meet the ATP serves

One card per entry, with its headline figure and where it ranks.

Ranked by ball speed

Fastest ATP Serves

John Isner
Fastest ATP-recognized serve · 2016 Davis Cup
Ball speed
253km/h157mph70.3m/s137knOfficial2.4× cheetah
#1 of 4 · Fastest ATP Serves
Ivo Karlović
Davis Cup doubles serve · 2011
Ball speed
251km/h156mph69.7m/s136knOfficial2.4× cheetah
#2 of 4 · Fastest ATP Serves
Milos Raonic
SAP Open semifinal serve · 2012
Ball speed
249.9km/h155mph69.4m/s135knOfficial2.4× cheetah
#3 of 4 · Fastest ATP Serves
Andy Roddick
Davis Cup serve · 2004
Ball speed
249.4km/h155mph69.3m/s135knOfficial2.4× cheetah
#4 of 4 · Fastest ATP Serves

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Meet the ATP serves

Fastest ATP Serves

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