Jacek Niedzwiedzki has a competitive career record of 11–13 across 24 matches (45.8%). The record shows a player capable of competing at Tour level, though there is clear room to push the win rate higher. Jacek Niedzwiedzki has reached 1 final without yet claiming a title — one of the finest margins in tennis.
At Grand Slam level (Australian Open, Roland Garros, Wimbledon, US Open): Jacek Niedzwiedzki has yet to record a win at Grand Slam level — 0–1 across 1 match. Breaking through here would mark a significant step forward.
One final reached, without converting it into a title. That final-round experience is valuable groundwork for going one step further next time. 1 semifinal. 1 quarterfinal.
By format — best-of-five: 4–5 (44.4%); best-of-three: 7–8 (46.7%). Slightly stronger in three-set contests, though the five-set record is still respectable.
Best season: 1977 — 5–5 (50.0%) from 10 matches. The best single-season display to date — a useful reference point as the career continues to develop.