H2H data updated: 2026-09-02 00:00 UTC
Amos Mansdorf holds a 1–0 lead over John Letts in their ATP head-to-head. Across 1 main-draw meeting, Amos Mansdorf leads 1–0 on carpet. Most recently, Amos Mansdorf won the 1989 Philadelphia round of 32 6-4 6-3.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Amos Mansdorf | 6-4 6-3 | John Letts | Match data | Feb 23, 1989* | R32 | Philadelphia | ATP 250 | Carpet |
Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 including documented historical predecessor categories | Finals | 500 including documented historical predecessor categories | 250 including documented historical predecessor categories | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Amos Mansdorf | #514 | #18 | 1,184 | 1,895 | 290 | 215 | 57.4% | 0 | 0 | 0 | 1 | 5 | 6 |
| John Letts | #1,113 | #244 | 40 | 1,522 | 4 | 11 | 26.7% | 0 | 0 | 0 | 0 | 0 | 0 |
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Age | Amos Mansdorf | John Letts | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 15 | 1981 | 0–1 | 0.0% | — | 1,489 | 0 | 0 | — | — | — | — | — | — | — |
| 17 | 1983 | 1–1 | 50.0% | — | 1,499 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 1984 | 3–2 | 60.0% | #270 | 1,531 | 0 | 0 | 1982 | 0–1 | 0.0% | — | 1,480 | 0 | 0 |
| 19 | 1985 | 15–13 | 53.6% | #84 | 1,672 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 1986 | 19–17 | 52.8% | #37 | 1,800 | 0 | 1 | — | — | — | — | — | — | — |
| 21 | 1987 | 35–21 | 62.5% | #27 | 1,805 | 0 | 2 | — | — | — | — | — | — | — |
| 22 | 1988 | 33–17 | 66.0% | #26 | 1,835 | 0 | 4 | 1986 | 1–1 | 50.0% | #380 | 1,504 | 0 | 0 |
| 23 | 1989 | 29–19 | 60.4% | #39 | 1,739 | 0 | 4 | 1987 | 1–3 | 25.0% | #403 | 1,503 | 0 | 0 |
| 24 | 1990 | 39–23 | 62.9% | #33 | 1,828 | 0 | 5 | 1988 | 1–5 | 16.7% | #300 | 1,460 | 0 | 0 |
| 25 | 1991 | 21–25 | 45.7% | #62 | 1,740 | 0 | 5 | 1989 | 1–1 | 50.0% | #388 | 1,474 | 0 | 0 |
| 26 | 1992 | 35–27 | 56.5% | #25 | 1,772 | 0 | 5 | — | — | — | — | — | — | — |
| 27 | 1993 | 40–24 | 62.5% | #25 | 1,780 | 0 | 6 | — | — | — | — | — | — | — |
| 28 | 1994 | 20–25 | 44.4% | #69 | 1,693 | 0 | 6 | — | — | — | — | — | — | — |
Seasons are aligned by the age each player spent most of that calendar year. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.
| Age | Amos Mansdorf | John Letts | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Carpet | Yr | Hard | Clay | Grass | Carpet | |||||||||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 15 | 1981 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 1983 | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 1984 | 3 | 2 | 5 | 60.0% | — | — | — | — | — | — | — | — | — | — | — | — | 1982 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 1985 | 6 | 6 | 12 | 50.0% | 3 | 3 | 6 | 50.0% | 5 | 3 | 8 | 62.5% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 1986 | 13 | 8 | 21 | 61.9% | 1 | 4 | 5 | 20.0% | 2 | 1 | 3 | 66.7% | 3 | 4 | 7 | 42.9% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 1987 | 20 | 10 | 30 | 66.7% | 0 | 1 | 1 | 0.0% | 5 | 4 | 9 | 55.6% | 10 | 6 | 16 | 62.5% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 1988 | 23 | 12 | 35 | 65.7% | 0 | 1 | 1 | 0.0% | 3 | 2 | 5 | 60.0% | 7 | 2 | 9 | 77.8% | 1986 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% |
| 23 | 1989 | 24 | 13 | 37 | 64.9% | 0 | 1 | 1 | 0.0% | 3 | 2 | 5 | 60.0% | 2 | 3 | 5 | 40.0% | 1987 | 0 | 2 | 2 | 0.0% | — | — | — | — | 1 | 1 | 2 | 50.0% | — | — | — | — |
| 24 | 1990 | 25 | 14 | 39 | 64.1% | 2 | 3 | 5 | 40.0% | 7 | 1 | 8 | 87.5% | 5 | 5 | 10 | 50.0% | 1988 | 1 | 4 | 5 | 20.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 25 | 1991 | 17 | 13 | 30 | 56.7% | 0 | 3 | 3 | 0.0% | 4 | 3 | 7 | 57.1% | 0 | 6 | 6 | 0.0% | 1989 | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% |
| 26 | 1992 | 24 | 16 | 40 | 60.0% | 1 | 3 | 4 | 25.0% | 3 | 3 | 6 | 50.0% | 7 | 5 | 12 | 58.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 27 | 1993 | 31 | 13 | 44 | 70.5% | 0 | 2 | 2 | 0.0% | 1 | 1 | 2 | 50.0% | 8 | 8 | 16 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 1994 | 14 | 13 | 27 | 51.9% | 2 | 5 | 7 | 28.6% | 2 | 2 | 4 | 50.0% | 2 | 5 | 7 | 28.6% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 201 | 122 | 323 | 62.2% | 9 | 26 | 35 | 25.7% | 35 | 22 | 57 | 61.4% | 45 | 45 | 90 | 50.0% | — | 1 | 7 | 8 | 12.5% | 0 | 1 | 1 | 0.0% | 1 | 1 | 2 | 50.0% | 2 | 2 | 4 | 50.0% |
Seasons are aligned by the age each player spent most of that calendar year. Metrics are precomputed from eligible main-draw results; point-stat values use the available detailed sample. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.
| Age | Amos Mansdorf | John Letts | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | |
| 15 | 1981 | 1489 | 96.6 | — | — | — | — | — | — | — | 33.3% | -2.33 | 0–1 | — | — | +0.06 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 1983 | 1499 | 102.6 | — | — | — | — | — | — | — | 60.0% | -0.20 | 0–1 | 1–0 | — | +0.18 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 1984 | 1531 | 104.3 | — | — | — | — | +32 | — | — | 60.0% | 0.00 | 2–0 | 1–0 | — | +0.76 | 1982 | 1480 | 99.0 | — | — | — | — | — | — | — | 0.0% | -2.33 | — | — | — | +0.15 |
| 19 | 1985 | 1672 | 131.3 | — | — | — | — | -36 | -131 | -32 | 52.9% | +0.47 | 5–4 (56%) | 3–7 (30%) | — | +1.17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 1986 | 1800 | 142.4 | — | — | — | — | -19 | -254 | -125 | 54.7% | +0.53 | 3–6 (33%) | 3–6 (33%) | — | -0.07 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 1987 | 1805 | 142.3 | — | — | — | — | +11 | — | -124 | 59.9% | +0.89 | 10–9 (53%) | 7–13 (35%) | — | +1.76 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 1988 | 1836 | 146.9 | — | — | — | — | +64 | — | -174 | 63.4% | +0.67 | 9–6 (60%) | 13–5 (72%) | — | -0.60 | 1986 | 1504 | 119.3 | — | — | — | — | — | — | — | 50.0% | -0.50 | — | — | — | -0.12 |
| 23 | 1989 | 1740 | 140.4 | — | — | — | — | +39 | — | -19 | 59.0% | +0.75 | 8–5 (62%) | 10–8 (56%) | — | +0.68 | 1987 | 1503 | 101.3 | — | — | — | — | — | — | — | 33.3% | -1.50 | — | — | — | +0.09 |
| 24 | 1990 | 1829 | 146.5 | — | — | — | — | -3 | -306 | +23 | 58.9% | +0.65 | 9–6 (60%) | 15–9 (63%) | — | +0.66 | 1988 | 1460 | 103.3 | — | — | — | — | +13 | — | — | 26.7% | -1.73 | 0–2 | 1–0 | — | +0.26 |
| 25 | 1991 | 1740 | 143.1 | -0.65 | +0.28 | 0.950 | 49.1% | +19 | -227 | +79 | 46.1% | -0.10 | 9–7 (56%) | 5–13 (28%) | — | -3.32 | 1989 | 1474 | 107.5 | — | — | — | — | — | — | — | 50.0% | 0.00 | — | — | — | +0.08 |
| 26 | 1992 | 1772 | 149.8 | +2.43 | +0.52 | 1.057 | 51.0% | +35 | -280 | +32 | 54.5% | +0.20 | 10–8 (56%) | 15–9 (63%) | — | -0.40 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 27 | 1993 | 1780 | 154.3 | +3.76 | +1.90 | 1.154 | 52.7% | +32 | — | — | 57.2% | +0.79 | 11–7 (61%) | 14–15 (48%) | — | -0.75 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 1994 | 1694 | 129.3 | -0.97 | -0.68 | 0.957 | 49.3% | +26 | -226 | +133 | 44.0% | -0.35 | 6–5 (55%) | 10–9 (53%) | — | +1.54 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1895 | 149.2 | +1.53 | +0.65 | 1.039 | 50.8% | +23 | -232 | -23 | 55.6% | +0.46 | 82–65 (56%) | 97–94 (51%) | 101.0 | +0.33 | — | 1523 | 111.0 | — | — | — | — | +13 | — | — | 31.6% | -1.39 | 0–2 | 1–0 | — | +3.07 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Stefan Edberg | 0 | 10 | 10 | Aug 14, 1994 | H2H |
| Brad Gilbert | 5 | 5 | 10 | Feb 14, 1992 | H2H |
| Aaron Krickstein | 3 | 5 | 8 | Oct 21, 1993 | H2H |
| Richey Reneberg | 5 | 1 | 6 | Jul 30, 1994 | H2H |
| Wally Masur | 3 | 3 | 6 | Jun 16, 1994 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Amos Mansdorf | 0 | 1 | 1 | Feb 23, 1989 | H2H |
| Robbie Weiss | 1 | 0 | 1 | Feb 22, 1989 | H2H |
| Jim Pugh | 0 | 1 | 1 | Sep 22, 1988 | H2H |
| Milan Srejber | 0 | 1 | 1 | Aug 11, 1988 | H2H |
| Dong Wook Song | 0 | 1 | 1 | Apr 21, 1988 | H2H |