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Ranking the 18 Most Unreadable Serves in Tennis History

A big serve is one thing. But a serve that’s nearly impossible to read? That’s the stuff of nightmares for returners. These are the players who made elite athletes look like weekend warriors just trying to guess which direction the ball was heading.

Whether it was disguise, mechanics, power, or placement, these servers kept their opponents guessing—and guessing wrong. Let’s take a look at the most unreadable, jaw-dropping serves the game has ever seen.

18. Madison Keys

Jun 30, 2025; Wimbledon, UNITED KINGDOM; Madison Keys of the United States serves during her match against Elena-Gabriela Ruse of Romania on day one at the All England Lawn Tennis and Croquet Club.
Susan Mullane-Imagn Images

Madison’s serve doesn’t just come fast—it comes out of nowhere. Her smooth motion and subtle wrist snap leave returners flat-footed more often than not.

17. Taylor Dent

Taylor Dent returning a serve during the Wimbledon tournament in 2005
daramot, via Wikimedia Commons, CC BY 2.0

Dent’s serve was a missile hidden behind a short, punchy motion. Opponents never had much time to prepare, and his ability to mix speeds added to the confusion.

16. Ivan Ljubičić

Mar 19, 2009; Indian Wells, CA, USA; Ivan Ljubicic (CRO) serves against Andy Murray (GBR) during the quarterfinals of the BNP Paribas Open at the Indian Wells Tennis Garden.
Jerry Lai-Imagn Images

Ljubičić’s serve didn’t get enough love, but it was quietly lethal. His compact motion and pinpoint placement gave opponents little time to react—and even less time to guess correctly.

15. Brenda Schultz-McCarthy

Brenda Schultz-McCarthy
Boer, Poppe de, via Wikimedia Commons, Public Domain

Schultz-McCarthy’s high toss and booming delivery looked awkward but were deadly. Her serve came down like a hammer and disguised its direction beautifully.

14. Kevin Anderson

Aug 31, 2020; Flushing Meadows, New York, USA; Kevin Anderson of South Africa serves against Alexander Zverev of Germany (not pictured) on day one of the 2020 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center.
Danielle Parhizkaran-Imagn Images

Anderson’s height helped, but it was his consistent, robotic motion that gave no visual clues. His toss, angle, and follow-through all looked the same—until the ball was already screaming past you.

13. Amélie Mauresmo

Aug 12, 2008; Mason, OH, USA; Amelie Mauresmo (FRA) serves the ball to Stephanie Cohen-Aloro (FRA) (not pictured) in the second round of the Western and Southern Financial Women's Open at Lindner Family Tennis Center in Mason, OH. Mauresmo won 6-7, 7-6, 6-1.
Frank Victores-Imagn Images

Amélie’s serve had a layered elegance that kept opponents on edge. Her ability to slice, kick, and flatten it out from the same toss made her delivery a riddle.

12. Mark Philippoussis

Mark Philippoussis
Tourism Victoria, via Wikimedia Commons, CC BY 2.0

The “Scud” had a serve that felt like it was shot out of a cannon. But it was the way he could blast a flat bomb or a wicked slice from the same motion that made it unreadable.

11. Sam Stosur

Sept. 7, 2010; Flushing, NY, USA; Sam Stosur (AUS) serves the ball on day ninth of the 2010 US Open against Kim Clijsters (BEL), not pictured, at Billie Jean King National Tennis Center.
Susan Mullane-Imagn Images

Stosur’s kick serve might be the most baffling in the women’s game. She could twist it high and wide, all while keeping the toss identical to her flat serves.

10. Goran Ivanišević

Goran Ivanišević
MacKrys, via Wikimedia Commons, CC BY-SA 4.0

Lefty serve plus erratic genius equals total chaos for opponents. Goran could hit every spot on the court with the same service toss, and no one ever knew what was coming.

9. Karolína Plíšková

Aug 13, 2024; Cincinnati, OH, USA ; Karolina Pliskova of the Czech Republic serves against Viktoriya Tomova of Bulgaria on day two of the Cincinnati Open.
Susan Mullane-Imagn Images

Plíšková’s serve is deceptively calm but brutally effective. Her lack of visible effort and rock-solid mechanics means the ball just suddenly appears where you didn’t expect it.

8. Milos Raonic

Mar 30, 2021; Miami, Florida, USA; Milos Raonic of Canada serves against Hubert Hurkacz of Poland (not pictured) in the fourth round in the Miami Open at Hard Rock Stadium.
Geoff Burke-Imagn Images

Raonic’s serve has always been technically precise, but his disguise is what makes it elite. The ball explodes off his racquet with no obvious tell, and it’s often gone before you even move.

7. Serena Williams

Sep 1, 2022; Flushing, NY, USA; Serena Williams (USA) serves behind Venus Williams (USA) (not pictured) against Lucia Hradecka (CZE) and Linda Noskova (CZE) (both not pictured) on day four of the 2022 U.S. Open tennis tournament at USTA Billie Jean King Tennis Center.
Geoff Burke-Imagn Images

Power gets the headlines, but it’s Serena’s variety and disguise that make her serve unreturnable. She’ll serve out wide, down the T, or throw in a kicker—all off the same toss.

6. Boris Becker

Jul 21, 2008; Toronto, ON, Canada; Boris Becker (GER) serves against Daniel Nestor (CAN) (not pictured) during their exhibition match during the Rogers Cup at the Rexall Centre in Toronto, ON.
Tom Szczerbowski-Imagn Images

Becker’s toss was identical whether he was hitting a slice, flat, or kicker. He turned service games into guessing games, and most players guessed wrong.

5. Petra Kvitová

Jul 1, 2025; Wimbledon United Kingdom; Petra Kvitova (CZE) serves against Emma Navarro (USA)(not pictured) on day 2 of The Championships, Wimbledon 2025 at All England Lawn Tennis and Croquet Club.
Geoff Burke-Imagn Images

Petra’s lefty serve spins away from right-handers like a magic trick. She never telegraphs her intent, which makes even her second serve tough to anticipate.

4. Andy Roddick

Sep 5, 2012; Queens, NY, USA; Andy Roddick (USA) serves against Juan Martin Del Potro (ARG) on day ten of the 2012 US Open at Billie Jean King National Tennis Center.
jerry Lai-Imagn Images

Roddick’s compact motion gave opponents no time to read or react. His serve was one of the fastest ever, but it was the deceptive wind-up that made it special.

Read More: Ranking the 15 Greatest Servers in Tennis History

3. Ash Barty

Aug 19, 2021; Mason, OH, USA; Ashleigh Barty (AUS) serves against Victoria Azarenka (BLR, not pictured) during the Western and Southern Open at Lindner Family Tennis Center.
Susan Mullane-Imagn Images

Barty didn’t overpower you—she outfoxed you. Her slice, kick, and flat serves all looked identical at the start, which is why her service games were so efficient.

Read More: Tennis Star Becker and Two Icons Break Down the Perfect Serve

2. Roger Federer

Roger Federer serves Novak Djokovic during the Western & Southern Open Men's finals match at the Lindner Family Tennis Center in Mason, Ohio, on Sunday, Aug. 19, 2018. Western Southern Open
Albert Cesare / The Enquirer / USA TODAY NETWORK

Federer’s serve is a masterclass in disguise and precision. He rarely hits 130 mph, but the placement, spin, and lack of tells made it one of the most unreadable in history.

Read More: 15 Legends Who Were Playing Modern Power Tennis in the ’80s

1. Pete Sampras

Feb. 18, 2008; San Jose, CA, USA; Pete Sampras (USA) serves the ball to Tommy Haas (GER), not pictured, in the exhibition match during the SAP Open men's tennis tournament at HP Pavilion in San Jose, CA. Sampras defeated Haas 6-4, 6-2.
Kyle Terada-Imagn Images

Pistol Pete had the smoothest, most inscrutable motion of all time. Whether it was a wide slider or a T-bomb, his opponents saw the same toss and same rhythm—until the ball zipped past them.

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