Juan Martin del Potro has an impressive career record of 439–174 across 613 matches (71.6% — strong). A win rate of that calibre over 613 matches is a reliable indicator of genuine quality. With 22 titles, among the most prolific champions in the Open Era: Stuttgart, Kitzbuhel, Los Angeles, Washington and 13 more.
At Grand Slam level (Australian Open, Roland Garros, Wimbledon, US Open): Juan Martin del Potro has been outstanding at the Slams — 97–36 (72.9%) across 133 matches. Winning more than 7 in 10 Grand Slam matches is the benchmark of an all-time great.
ATP Masters 1000 (Indian Wells, Miami, Monte Carlo, Madrid, Rome, Canada, Cincinnati, Shanghai, Paris): Juan Martin del Potro is elite here — 107–57 (65.2%) across 164 matches. Sustaining that win rate in the Tour's deepest regular-week draws is a defining quality of the very best.
35 finals reached — won 22, lost 13 (solid 63% conversion) — consistently getting to finals and winning the majority is a hallmark of elite performers. 59 semifinals. 88 quarterfinals.
vs. Top 10: 53–78 (40.5%, 131 matches). Competitive against the elite, but still narrowly below .500 — closing that gap would directly elevate the overall career profile.
By format — best-of-five: 111–41 (73.0%); best-of-three: 328–133 (71.1%). Consistent regardless of format — a sign of a well-rounded game that holds up as matches develop.
Dominant season: 2012 — 65–17 (79.3%) from 82 matches. That year represents a level of dominance that sets the ceiling for what Juan Martin del Potro can produce.
Juan Martin del Potro assembled a remarkable 23-match winning streak — a run of that length goes far beyond form and into a different level of dominance.