| R32 | L | Pascal Portes | 7-5 6-3 | H2H |
🇿🇦 RSA · Right-handed · b. 1954-02-25
Willem Prinsloo
Active 1971–1979 · best rank seen: 84
13–33
0
0
0
0
425
Hard
8–12 (40.0%)
Clay
4–16 (20.0%)
Grass
0–2 (0.0%)
Carpet
1–3 (25.0%)
Grand Slam record
| '77 | '78 | '79 | |
|---|---|---|---|
| Australian Open | |||
| Roland Garros | 1R | ||
| Wimbledon | 1R | ||
| US Open | 2R | 2R | 1R |
Season by season
Gold band: best three-year window (1977–1979).
Elo over time
Pre-match Elo, sampled across the career. Peak: 1663.
Match results
| R128 | L | Tom Gullikson | 6-3 6-4 6-2 | H2H |
| R32 | L | Gene Stuart Malin | 6-3 2-6 6-2 | H2H |
| R32 | L | Robert Lutz | 6-2 6-2 | H2H |
| R32 | L | Chris Kachel | 6-4 3-6 6-1 | H2H |
| R64 | L | Warren Maher | 3-6 6-1 6-2 | H2H |
| R16 | L | Heinz Gunthardt | 3-6 6-2 6-2 | H2H |
| R32 | W | Bob Hewitt | 6-1 6-4 | H2H |
| R32 | L | Andrew Jarrett | 6-1 3-6 6-4 | H2H |
| R32 | L | Colin Dibley | 6-2 6-3 | H2H |
Methodology
Titles include Slams, Masters, Tour Finals, 500s, 250s, legacy tour events and Olympic gold; Davis Cup is excluded, and walkovers are excluded from all win–loss records. GOAT points value every round reached, scaled per tier (Slam title 2000 anchor; ranking includes Slam champions only, but every player's points are shown here). Elo is a chess-style rating over the full match history (K = 250/(n+5)^0.4); the timeline shows pre-match ratings, sampled. The gold band on the season chart marks the best three-consecutive-year window.