Joakim Nystrom has an impressive career record of 265–142 across 407 matches (65.1% — strong). A win rate of that calibre over 407 matches is a reliable indicator of genuine quality. With 13 titles, among the most prolific champions in the Open Era: Sydney-2, Gstaad, North Conway, Basel and 8 more.
At Grand Slam level (Australian Open, Roland Garros, Wimbledon, US Open): a positive 47–26 (64.4%) across 73 matches — a player who generally rises to the occasion at the Slams.
18 finals reached — won 13, lost 5 (solid 72% conversion) — consistently getting to finals and winning the majority is a hallmark of elite performers. 32 semifinals. 53 quarterfinals.
vs. Top 10: 19–34 (35.8%, 53 matches). Top 10 opponents have represented a clear ceiling; addressing that deficit is the single biggest lever for improving the overall record.
By format — best-of-five: 57–36 (61.3%); best-of-three: 208–106 (66.2%). Slightly stronger in three-set contests, though the five-set record is still respectable.
Dominant season: 1986 — 59–17 (77.6%) from 76 matches. That year represents a level of dominance that sets the ceiling for what Joakim Nystrom can produce.