Frederik Nielsen has a competitive career record of 26–31 across 57 matches (45.6%). The record shows a player capable of competing at Tour level, though there is clear room to push the win rate higher.
At Grand Slam level (Australian Open, Roland Garros, Wimbledon, US Open): Frederik Nielsen has yet to record a win at Grand Slam level — 0–1 across 1 match. Breaking through here would mark a significant step forward.
By format — best-of-five: 21–18 (53.8%); best-of-three: 5–13 (27.8%). Significantly better in five-set matches — a strong physical profile that tends to tell as matches and tournaments progress.
Best season: 2017 — 5–1 (83.3%) from 6 matches. The best single-season display to date — a useful reference point as the career continues to develop.