H2H data updated: 2026-09-05 00:00 UTC

Lawson Duncan vs Guillermo Rivas H2H: 1-0

Lawson Duncan holds a 1–0 lead over Guillermo Rivas in their ATP head-to-head. Across 1 main-draw meeting, Lawson Duncan leads 1–0 on clay. Most recently, Lawson Duncan won the 1985 Forest Hills round of 16 6-3 6-4.

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Lawson Duncan
USA Age 61 Right-Handed 185 cm / 6'1"
H2H
1 – 0
1 main-draw meetings
Guillermo Rivas
ARG Age 62 Right-Handed 183 cm / 6'0"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Lawson Duncan #68 6-3 6-4 Guillermo Rivas #146 Match data May 10, 1985* R16 Forest Hills ATP 250 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
Lawson Duncan #1,094 #47 317 1,761 105 110 48.8% 0 0 0 0 0 0
Guillermo Rivas #783 #116 105 1,507 10 27 27.0% 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 Lawson Duncan Guillermo Rivas
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
19 1984 4–5 44.4% #165 1,537 0 0 — — — — — — —
20 1985 26–19 57.8% #59 1,624 0 0 1984 1–4 20.0% #156 1,462 0 0
21 1986 11–18 37.9% #174 1,570 0 0 1985 3–8 27.3% #193 1,453 0 0
22 1987 6–9 40.0% #93 1,565 0 0 1986 0–3 0.0% #279 1,426 0 0
23 1988 21–17 55.3% #58 1,658 0 0 — — — — — — —
24 1989 25–22 53.2% #91 1,672 0 0 1988 0–3 0.0% #185 1,412 0 0
25 1990 12–18 40.0% #143 1,589 0 0 1989 6–8 42.9% #251 1,447 0 0
26 1991 0–2 0.0% #432 1,565 0 0 1990 0–1 0.0% #714 1,439 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 Lawson Duncan Guillermo Rivas
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 %
19 1984 1 2 3 33.3% 2 2 4 50.0% — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — —
20 1985 1 4 5 20.0% 25 15 40 62.5% — — — — — — — — 1984 1 1 2 50.0% 0 3 3 0.0% — — — — — — — —
21 1986 1 3 4 25.0% 9 14 23 39.1% — — — — 1 1 2 50.0% 1985 0 1 1 0.0% 3 7 10 30.0% — — — — — — — —
22 1987 0 2 2 0.0% 6 7 13 46.2% — — — — — — — — 1986 — — — — 0 3 3 0.0% — — — — — — — —
23 1988 2 3 5 40.0% 19 13 32 59.4% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
24 1989 2 5 7 28.6% 23 17 40 57.5% — — — — — — — — 1988 0 1 1 0.0% 0 2 2 0.0% — — — — — — — —
25 1990 2 4 6 33.3% 9 10 19 47.4% 0 1 1 0.0% 1 3 4 25.0% 1989 — — — — 4 7 11 36.4% — — — — 2 1 3 66.7%
26 1991 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — 1990 0 1 1 0.0% — — — — — — — — — — — —
Career — 9 24 33 27.3% 93 79 172 54.1% 0 1 1 0.0% 3 6 9 33.3% — 1 4 5 20.0% 7 22 29 24.1% — — — — 2 1 3 66.7%

Advanced Statistics Comparison by Age

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 Lawson Duncan Guillermo Rivas
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
19 1984 1538 118.7 — — — — +16 +33 — 42.1% -0.84 — 1–0 — +0.04 — — — — — — — — — — — — — — — —
20 1985 1625 135.4 — — — — -112 +56 — 55.2% +0.25 7–4 (64%) 7–1 (88%) 108.1 +2.39 1984 1463 100.3 — — — — — +34 — 30.8% -0.69 1–2 (33%) 0–3 (0%) 95.7 +0.77
21 1986 1570 128.6 — — — — -55 +57 — 45.6% -0.35 1–8 (11%) 8–2 (80%) 97.4 +0.35 1985 1454 100.1 — — — — — +11 — 30.8% -1.81 2–2 (50%) 1–1 — +0.44
22 1987 1566 120.6 — — — — — +69 — 43.8% -0.16 1–2 (33%) 0–2 — +0.50 1986 1426 99.9 — — — — — +27 — 14.3% -2.57 0–1 0–1 — +0.12
23 1988 1658 128.6 — — — — -200 +59 — 52.4% +0.15 4–4 (50%) 5–5 (50%) 99.5 +1.27 — — — — — — — — — — — — — — — —
24 1989 1672 132.8 — — — — -181 +42 — 52.6% +0.20 5–5 (50%) 5–4 (56%) 99.4 +1.78 1988 1412 113.9 — — — — — — — 25.0% -1.50 0–2 1–0 — -0.24
25 1990 1590 119.9 — — — — -91 +107 — 38.8% -1.07 2–4 (33%) 5–1 (83%) 101.9 +1.13 1989 1448 100.7 — — — — +79 -16 — 45.2% -0.61 1–2 (33%) 4–1 (80%) 102.3 +1.52
26 1991 1565 95.6 +0.82 -1.98 0.695 44.0% — — — 0.0% -2.75 — 0–2 — -0.06 1990 1439 97.6 — — — — — — — 0.0% -3.50 — — — +0.02
Career — 1762 133.6 +0.82 -1.98 0.695 44.0% -107 +60 — 48.9% -0.13 20–27 (43%) 31–17 (65%) 102.7 +3.44 — 1507 103.1 — — — — +79 +4 — 33.3% -1.29 4–9 (31%) 6–6 (50%) 97.1 +7.11

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.