Juan Martín del Potro: The US Open 2009 Moment That Defined His Career

Juan Martín del Potro stands as one of tennis’ most compelling stories of resilience, and triumph. His journey to the pinnacle of the sport reached its zenith at the 2009 US Open, where he defeated Roger Federer in a legendary five-set final to claim his first and only Grand Slam title. Yet, as del Potro himself has reflected, it was not the final that brought him closest to overcoming Federer’s dominance—it was the semifinal encounter that truly tested his mettle.

In the semifinals of the 2009 US Open, del Potro faced Rafael Nadal, the world No. 1 at the time and a formidable opponent on any surface. The Argentine pushed the Spaniard to the limit in a match that showcased his powerful forehand and unyielding determination. Though he ultimately fell short, the experience proved pivotal. It was in that semifinal that del Potro first felt he could compete with—and potentially defeat—the game’s elite, setting the stage for his historic final victory over Federer just days later.

The 2009 US Open men’s singles draw featured a storied field. Federer, the five-time defending champion, sought to develop into the first man in the Open Era to win six consecutive titles at Flushing Meadows. Nadal, fresh off a French Open-Wimbledon double, aimed to complete the Surface Slam. Novak Djokovic rounded out the Big Three, all of whom reached the semifinals—a rare occurrence where none of the trio ultimately won the championship.

Del Potro’s path to the final included victories over notable opponents. He defeated Marin Čilić in the fourth round, a match that indirectly influenced the ATP rankings as Nadal reclaimed the world No. 2 spot after Murray’s loss to the Croatian. Seeded sixth, del Potro navigated a challenging draw that saw Andy Murray seeded second ahead of Nadal, reflecting Murray’s recent rise to world No. 2.

The final itself remains one of the most memorable in US Open history. Del Potro defeated Federer 3–6, 7–6(7–5), 4–6, 7–6(7–4), 6–2 in a match that lasted four hours and six minutes. It was the first US Open final since 1999 to go to five sets and marked the first time an Argentine had won the title since Guillermo Vilas in 1977. Del Potro became the most recent non-European player to win a major title at that time, breaking a streak dominated by European and Big Three players.

For Federer, the loss was particularly painful. He had been vying to become the first man since Bill Tilden in 1925 to win six consecutive US Open titles and was attempting to complete the Surface Slam having already won the French Open and Wimbledon. The defeat denied him a place in tennis history and underscored the emergence of a new generation capable of challenging the sport’s established hierarchy.

The significance of del Potro’s victory extends beyond the trophy. It was the only major title not won by the Big Three (Djokovic, Federer, Nadal) between the 2005 Australian Open and the 2012 US Open—a span of 30 events. It was the only major during that period where all three members of the Big Three reached the semifinals, yet none claimed the title.

Del Potro’s triumph also carried emotional weight. The tournament marked the final major appearance of two-time major champion and former world No. 1 Marat Safin, adding a layer of poignancy to the proceedings. For del Potro, the win represented the culmination of years of hard work and belief, validating his status as a true contender on tennis’ biggest stage.

In reflecting on his career, del Potro has often pointed to the 2009 US Open as the defining moment. While the final victory over Federer cemented his legacy, it was the semifinal battle against Nadal that first convinced him he belonged among the sport’s elite. That match, though a loss, provided the confidence and experience necessary to elevate his game when it mattered most.

The 2009 US Open remains a touchstone in del Potro’s career—a tournament where he came closest to beating Federer before ultimately doing so, and where he announced himself as a force capable of reshaping the landscape of men’s tennis. For fans and analysts alike, it serves as a reminder of the sport’s unpredictability and the thin line between near-miss and immortality.

As tennis continues to evolve, the 2009 US Open stands as a testament to what is possible when preparation, belief, and opportunity converge. Juan Martín del Potro’s journey that year—from the hard-fought semifinal to the historic final—continues to inspire players and fans worldwide, proving that even in an era of dominance, there is always room for a new name to be etched into history.

For those looking to revisit the match that defined a generation, footage of the 2009 US Open final between del Potro and Federer remains widely available, offering a window into one of tennis’ most compelling narratives.

What’s next for tennis historians and fans is continued reflection on how moments like del Potro’s 2009 triumph shape the sport’s legacy. As new challengers emerge, the lessons from that Flushing Meadows fortnight remain relevant: belief, perseverance, and the courage to seize opportunity when it arrives.

Share your thoughts on this iconic match and what it means for tennis history in the comments below.