H2H data updated: 2026-10-19 00:00 UTC

Zan Guerry vs Cliff Letcher H2H: 1-0

Zan Guerry holds a 1–0 lead over Cliff Letcher in their ATP head-to-head. Across 1 main-draw meeting, Zan Guerry leads 1–0 on clay. Most recently, Zan Guerry won the 1977 US Open round of 128 6-2 6-1.

Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.

Zan Guerry
USA Age 77 Right-Handed
H2H
1 – 0
1 main-draw meetings
Cliff Letcher
AUS Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Zan Guerry 6-2 6-1 Cliff Letcher Match data Sep 2, 1977* R128 US Open Grand Slam Clay

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.

Career Comparison

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
Zan Guerry #490 #98 0 1,598 41 76 35.0% 0 0 0 0 0 0
Cliff Letcher — — — 1,667 — — — 0 0 0 0 0 0

Career Progression by Age

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 Zan Guerry Cliff Letcher
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 1968 4–6 40.0% — 1,476 0 0 — — — — — — —
20 1969 8–10 44.4% — 1,526 0 0 — — — — — — —
21 1970 1–3 25.0% — 1,509 0 0 — — — — — — —
22 1971 4–6 40.0% — 1,511 0 0 — — — — — — —
23 1972 5–7 41.7% — 1,513 0 0 — — — — — — —
24 1973 3–5 37.5% #203 1,515 0 0 — — — — — — —
25 1974 1–1 50.0% #228 1,536 0 0 — — — — — — —
26 1975 2–2 50.0% #205 1,565 0 0 — — — — — — —
27 1976 0–6 0.0% #176 1,500 0 0 — — — — — — —
28 1977 8–16 33.3% #98 1,562 0 0 — — — — — — —
29 1978 2–7 22.2% #279 1,522 0 0 — — — — — — —
30 1979 1–3 25.0% #326 1,517 0 0 — — — — — — —
31 1980 1–2 33.3% — 1,483 0 0 — — — — — — —
32 1981 0–1 0.0% — 1,477 0 0 — — — — — — —
33 1982 1–1 50.0% — 1,498 0 0 — — — — — — —

Surface Results by Age

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 Zan Guerry Cliff Letcher
Yr HardClayGrassCarpet Yr HardClayGrassCarpet
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 %
18 — — — — — — — — — — — — — — — — — 1970 — — — — — — — — 0 2 2 0.0% — — — —
19 1968 — — — — 3 3 6 50.0% 1 3 4 25.0% — — — — 1971 0 1 1 0.0% — — — — 2 2 4 50.0% — — — —
20 1969 0 1 1 0.0% 6 5 11 54.5% 2 4 6 33.3% — — — — 1972 0 1 1 0.0% — — — — 1 3 4 25.0% — — — —
21 1970 0 1 1 0.0% 1 2 3 33.3% — — — — — — — — 1973 — — — — — — — — 4 3 7 57.1% — — — —
22 1971 2 2 4 50.0% 2 3 5 40.0% 0 1 1 0.0% — — — — 1974 — — — — 1 1 2 50.0% 3 3 6 50.0% — — — —
23 1972 1 2 3 33.3% 4 4 8 50.0% 0 1 1 0.0% — — — — 1975 1 3 4 25.0% 0 3 3 0.0% 1 2 3 33.3% — — — —
24 1973 2 4 6 33.3% — — — — 1 1 2 50.0% — — — — 1976 2 4 6 33.3% 3 7 10 30.0% 0 2 2 0.0% — — — —
25 1974 — — — — 1 1 2 50.0% — — — — — — — — 1977 2 2 4 50.0% 4 10 14 28.6% 6 4 10 60.0% — — — —
26 1975 1 1 2 50.0% 1 1 2 50.0% — — — — — — — — 1978 2 3 5 40.0% 4 8 12 33.3% 0 3 3 0.0% 0 3 3 0.0%
27 1976 0 2 2 0.0% 0 3 3 0.0% — — — — 0 1 1 0.0% 1979 0 1 1 0.0% 1 2 3 33.3% 4 5 9 44.4% — — — —
28 1977 0 3 3 0.0% 8 11 19 42.1% — — — — 0 2 2 0.0% 1980 0 2 2 0.0% 0 2 2 0.0% 3 4 7 42.9% 2 1 3 66.7%
29 1978 — — — — 2 3 5 40.0% — — — — 0 4 4 0.0% 1981 — — — — 0 1 1 0.0% 4 3 7 57.1% 0 1 1 0.0%
30 1979 0 1 1 0.0% 1 2 3 33.3% — — — — — — — — 1982 0 2 2 0.0% 0 3 3 0.0% 1 3 4 25.0% 0 1 1 0.0%
31 1980 — — — — 0 1 1 0.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — —
32 1981 — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
33 1982 — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 6 17 23 26.1% 30 41 71 42.3% 5 11 16 31.2% 0 7 7 0.0% — 7 19 26 26.9% 13 37 50 26.0% 29 39 68 42.6% 2 6 8 25.0%

Advanced Statistics Comparison by Age

Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. 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 Zan Guerry Cliff Letcher
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
18 — — — — — — — — — — — — — — — — 1970 1468 93.4 — — — — — — — 0.0% -3.75 — — — +0.39
19 1968 1477 99.0 — — — — — +41 -13 41.7% -0.50 1–1 — — -0.13 1971 1466 93.6 — — — — — — +39 38.5% -1.39 — 1–1 — +0.69
20 1969 1527 112.6 — — — — — +58 -60 47.9% -0.10 3–3 (50%) — — -0.60 1972 1432 101.7 — — — — — — +52 41.2% -0.35 0–3 (0%) 2–1 (67%) 96.4 +0.74
21 1970 1509 100.8 — — — — — +67 — 36.4% -1.36 1–2 (33%) — — +0.06 1973 1507 107.4 — — — — — — +16 50.0% -0.06 1–0 1–1 — +0.05
22 1971 1512 109.1 — — — — -8 +73 — 34.8% -0.43 2–1 (67%) 0–3 (0%) 99.0 +0.02 1974 1544 117.4 — — — — — — +6 44.4% +0.28 2–0 0–4 (0%) — +0.23
23 1972 1513 101.7 — — — — -18 +69 — 45.5% -0.03 3–4 (43%) 3–6 (33%) 95.4 +1.00 1975 1516 113.8 — — — — -9 +18 +23 34.6% -0.96 0–4 (0%) 1–0 — +0.15
24 1973 1516 109.4 — — — — -6 — — 45.8% -0.17 2–3 (40%) 2–2 (50%) 101.5 +0.71 1976 1489 120.5 — — — — -13 +55 — 32.6% -1.00 3–4 (43%) 2–3 (40%) 99.5 +0.96
25 1974 1537 108.8 — — — — — — — 50.0% -0.50 — 1–0 — -0.19 1977 1634 129.1 — — — — -127 -121 -2 44.3% -0.35 7–5 (58%) 3–4 (43%) 105.5 +0.86
26 1975 1565 108.3 — — — — — — — 44.4% -0.22 1–0 0–1 — +0.08 1978 1571 124.3 — — — — -45 -51 +45 30.2% -1.60 2–3 (40%) 2–1 (67%) 99.8 -0.75
27 1976 1500 112.0 — — — — -21 +41 — 14.3% -1.71 0–1 0–1 — +0.12 1979 1556 113.4 — — — — — -57 +54 45.9% -0.11 1–4 (20%) 4–2 (67%) 97.5 +0.68
28 1977 1563 135.9 — — — — -120 +42 — 39.3% -0.73 2–6 (25%) 1–2 (33%) — -0.82 1980 1539 106.3 — — — — -18 — +64 39.4% -0.88 2–3 (40%) 1–1 — +1.30
29 1978 1523 109.4 — — — — -107 +79 — 37.5% -1.04 1–5 (17%) 2–0 — +0.86 1981 1570 105.2 — — — — — — +103 40.7% -1.07 2–0 4–0 (100%) — +1.23
30 1979 1518 104.3 — — — — — +61 — 40.0% -0.70 0–2 — — -0.17 1982 1467 96.5 — — — — +3 -52 +146 22.7% -1.77 0–2 0–1 — +1.08
31 1980 1484 91.9 — — — — — — — 0.0% -3.75 — — — +0.48 — — — — — — — — — — — — — — — —
32 1981 1478 100.2 — — — — — — — 0.0% -3.50 — — — -0.08 — — — — — — — — — — — — — — — —
33 1982 1499 109.7 — — — — — — — 40.0% -0.80 1–0 — — -0.23 — — — — — — — — — — — — — — — —
Career — 1598 119.7 — — — — -49 +56 -41 39.9% -0.60 17–28 (38%) 9–15 (38%) 94.7 +0.97 — 1667 120.8 — — — — -35 -45 +46 38.2% -0.81 20–28 (42%) 21–19 (53%) 100.4 +5.01

Career Rivalries

Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.