| R32 | L | Butch Walts | 6-3 6-2 | H2H |
🇺🇸 USA · Right-handed · 188 cm · b. 1943-11-04
Clark Graebner
Active 1968–1976 · best rank seen: 42
348–156
13
0
0
30
13,990
Hard
91–51 (64.1%)
Clay
64–28 (69.6%)
Grass
115–31 (78.8%)
Carpet
78–46 (62.9%)
Main rivals
| Opponent | Record | Meetings | |
|---|---|---|---|
| 🇷🇴 Ilie Nastase | 8–5 | 13 | Full H2H |
| 🇭🇷 Zeljko Franulovic | 4–8 | 12 | Full H2H |
Opponents faced 10+ times; walkovers excluded.
Grand Slam record
| '68 | '69 | '70 | '71 | '72 | '73 | '74 | '75 | |
|---|---|---|---|---|---|---|---|---|
| Australian Open | ||||||||
| Roland Garros | 4R | |||||||
| Wimbledon | SF | QF | QF | 3R | 2R | 1R | ||
| US Open | SF | 2R | 4R | QF | 2R | 1R | 3R | 1R |
Season by season
Gold band: best three-year window (1968–1970).
Elo over time
Pre-match Elo, sampled across the career. Peak: 2095.
Career titles (13)
- 1973 Des Moines Carpet
- 1971 South Orange Grass
- 1971 Haverford Grass
- 1971 Salisbury Carpet
- 1970 Beckenham Grass
- 1970 Houston Clay
- 1969 Southampton Grass
- 1969 Manchester Grass
- 1969 Sacramento Hard
- 1969 Buffalo Hard
- 1969 Richmond Carpet
- 1968 Milwaukee Clay
- 1968 Sacramento Hard
Match results
| R32 | L | Victor Amaya | 6-2 6-2 | 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.