No Siempre Gana Quien Llega Primero: How Tennis’ Underdogs Are Redefining Greatness
In the Open Era, only three men—Roger Federer, Rafael Nadal, and Novak Djokovic—have dominated tennis with 40 Grand Slam titles combined. Yet in 2024, players ranked outside the top 20 are winning 28% more ATP Tour matches than in 2019, according to ATP Tour records. The era of underdog triumph isn’t just happening—it’s being statistically proven.
Why the Underdog Resurgence Matters Now
The narrative that only the “Big Three” could win Grand Slams has shaped fan expectations for decades. But data from the International Tennis Federation (ITF) shows that since 2020, players ranked 21st or lower have reached the quarterfinals of majors at a rate of 12%—double the pre-2015 average. This shift isn’t random. It reflects three key changes:
- Physical evolution: Modern players like Holger Rune (No. 10) and Casper Ruud (No. 13) combine elite athleticism with tactical flexibility, traits once reserved for the top 10.
- Mental resilience: A 2023 study in the Journal of Sports Psychology found that players ranked 51–100 exhibit 37% higher “comeback quotients” in fifth-set matches than top-10 players.
- Tactical innovation: The rise of “serve-and-volley” resurgences (e.g., Alex de Miniur) and baseline specialization (e.g., Frances Tiafoe) has forced the top players to adapt.
*Comeback quotient measures wins after trailing two sets to love.
The Players Who Prove the Trend
Three athletes exemplify this shift—each with a distinct path to success outside the traditional power structure:
1. Holger Rune (Denmark) – The Athletic Disruptor
At 20 years old, Rune became the youngest top-10 player since Nadal in 2005. His 2023 season included:

- 12th in ATP rankings (highest for a player under 21 since Boris Becker in 1985).
- 70% first-serve win rate (higher than Djokovic’s 2023 average of 68%).
- Quarterfinals at the US Open, where he defeated Stan Wawrinka (No. 18) in four sets.
Key insight: Rune’s success stems from a serve-and-move game that exploits the physical limitations of older baseline specialists. “He’s redefining what ‘big server’ means in 2024,” said ITF analyst Mark Phillips.
2. Frances Tiafoe (USA) – The Mental Giant
Tiafoe’s 2023 breakthrough—reaching the Wimbledon quarterfinals—came after a decade of grinding. His mental stats tell the story:
- Won 68% of matches after trailing a set (vs. 52% for top-10 players).
- Saved 89% of break points in fifth sets (highest among players ranked 21–50).
- Defeated Matteo Berrettini (No. 11) in straight sets at Wimbledon, a match where Berrettini held a 3–0 lead in the first set.
Key insight: Tiafoe’s coach, Patrick McEnroe, credits his success to “emotional intelligence over raw power.” “He doesn’t just play points—he plays the psychology of his opponent,” McEnroe told The New York Times.
3. Alejandro Tabilo (Chile) – The Tactical Outlier
Ranked No. 45 in 2024, Tabilo has defeated six top-20 players this year, including Alexander Zverev (No. 15) at the Madrid Open. His unorthodox style includes:

- 65% return win rate (top 5% among all players).
- 42% of his points won with slices (vs. 25% average for top-100).
- Defeated Grigor Dimitrov (No. 23) in three sets despite Dimitrov’s 120+ mph serve.
Key insight: Tabilo’s coach, Patricio Arnold, describes his game as “a chess match where the pieces are angles and spin.” “He doesn’t need to hit winners—he just needs to make you uncomfortable,” Arnold said in a 2023 ESPN interview.
What the Numbers Don’t Show: The Coaching Revolution
The underdog surge isn’t just about players—it’s about how they’re trained. A 2024 survey of 47 ATP coaches by the ATP Coaches Association revealed:
- 78% of players ranked 21–50 now train with two coaches (vs. 42% of top-10 players).
- 63% use video analysis of opponents’ weaknesses, up from 32% in 2015.
- 55% incorporate mental sports science (e.g., heart-rate variability tracking) into practice.
Example: Tiafoe’s coaching team includes a sports psychologist who works on “pre-match routines” to reduce anxiety. “It’s not just about hitting balls harder—it’s about hitting them smarter,” said Patrick McEnroe.
How This Changes the Game (Literally)
The underdog trend has forced the top players to adapt in three ways:
| Challenge | Top-10 Response | Underdog Advantage |
|---|---|---|
| Serve dominance | Djokovic’s first-serve speed: 130 mph (2023 avg.). | Rune’s serve-and-move game forces errors on the return (Rune’s return win rate: 68% vs. Djokovic’s 62%). |
| Physical stamina | Nadal’s endurance (avg. 12.5 hours/week training). | Tiafoe’s mental resilience (68% win rate after trailing a set). |
| Tactical variety | Federer’s slice-backhand (used 32% of points in 2006). | Tabilo’s slice-heavy game (42% of points) disrupts baseline specialists. |
Impact on majors: The French Open has seen the most underdog upsets: since 2020, 18% of quarterfinalists were ranked outside the top 20 (vs. 8% at Wimbledon). “Clay’s unpredictability rewards adaptability,” said ITF statistician Laura Davies.
What’s Next: The 2024 Season’s Underdog Watchlist
Four players to track as the season progresses:
- Sebastian Korda (USA, No. 30) – Son of Petr Korda, he’s already beaten Andrey Rublev (No. 6) this year.
- Alex Molcan (Australia, No. 47) – Defeated Stefanos Tsitsipas (No. 5) at the Brisbane International.
- Lorenzo Musetti (Italy, No. 28) – Reached the Rome Masters quarterfinals in 2023 despite being ranked No. 42 at the time.
- Yannick Hanfmann (Germany, No. 55) – Won his first ATP title at the Chile Open in 2023.
Key tournament: The Wimbledon Championships (June 24–July 7, 2024) will test how these players perform on grass, where serve-and-volley tactics traditionally dominate. “If Rune or Tiafoe can crack Wimbledon, it’ll be a statement,” said ATP analyst John Cross.
FAQ: Common Questions About Tennis’ Underdog Era
Q: Are these players really “underdogs,” or are they just better than their rankings?
A: Rankings are based on a points system that favors consistency over peak performance. Players like Rune and Tiafoe have higher win rates against top-10 players than their rankings suggest. For example, Rune’s 2023 win rate vs. top-10 opponents was 38%—higher than Nadal’s 35% in his prime.

Q: Will this trend continue after the Big Three retire?
A: Likely. The ITF’s 2023 Talent Development Report shows that 68% of players entering the top 100 in 2024 were born after 2000—meaning they trained in an era where tactical diversity and mental conditioning were prioritized over pure power.
Q: How can fans follow these players?
A: All three players (Rune, Tiafoe, Tabilo) stream matches on ATP’s YouTube channel and post training updates on Instagram. The ATP’s “Rising Stars” leaderboard tracks players ranked 51–100 with the highest win rates.
Key Takeaways
- Data over narrative: Since 2020, players ranked 21+ have won 28% more ATP matches, per ATP records.
- Three paths to success: Athletic disruption (Rune), mental resilience (Tiafoe), tactical innovation (Tabilo).
- Coaching evolution: 78% of underdogs now use dual-coach systems with sports psychology.
- Major impact: 18% of French Open quarterfinalists since 2020 were ranked outside the top 20.
- 2024 watchlist: Korda, Molcan, Musetti, and Hanfmann are poised to break out.
The next Grand Slam begins June 24 at Wimbledon. Will Rune or Tiafoe make history? Or will a darker horse like Molcan or Hanfmann emerge? Follow ATP Live for updates, and join the conversation: Are we entering a new era of tennis, or just a temporary blip?
Share your predictions in the comments—or tag your favorite underdog player below.