H2H data updated: 2026-09-06 00:00 UTC

Derek Tarr vs Schalk Van Der Merwe H2H: 0-1

Schalk Van Der Merwe holds a 1–0 lead over Derek Tarr in their ATP head-to-head. Across 1 main-draw meeting, Schalk Van Der Merwe leads 1–0 on hard courts. Most recently, Schalk Van Der Merwe won the 1982 US Open round of 128 6-1 5-7 6-3 3-6 6-4.

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Derek Tarr
USA Age 66 Left-Handed 185 cm / 6'1"
H2H
0 – 1
1 main-draw meetings
Schalk Van Der Merwe
RSA Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Schalk Van Der Merwe 6-1 5-7 6-3 3-6 6-4 Derek Tarr Match data Sep 2, 1982* R128 US Open Grand Slam Hard

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
Derek Tarr #1,043 #87 1 1,572 18 40 31.0% 0 0 0 0 0 0
Schalk Van Der Merwe — — — 1,561 — — — 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 Derek Tarr Schalk Van Der Merwe
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
21 1981 0–1 0.0% — 1,494 0 0 — — — — — — —
22 1982 3–10 23.1% — 1,472 0 0 — — — — — — —
23 1983 5–8 38.5% #97 1,519 0 0 — — — — — — —
24 1984 6–12 33.3% #159 1,548 0 0 — — — — — — —
25 1985 1–4 20.0% #215 1,525 0 0 — — — — — — —
26 1986 1–1 50.0% #188 1,539 0 0 — — — — — — —
27 1987 2–4 33.3% #235 1,518 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 Derek Tarr Schalk Van Der Merwe
Yr HardClayGrass Yr HardClayGrass
W L M Win % W L M Win % W L M Win % W L M Win % W L M Win % W L M Win %
17 — — — — — — — — — — — — — 1978 0 1 1 0.0% — — — — — — — —
19 — — — — — — — — — — — — — 1980 0 2 2 0.0% 0 1 1 0.0% — — — —
20 — — — — — — — — — — — — — 1981 0 1 1 0.0% — — — — — — — —
21 1981 0 1 1 0.0% — — — — — — — — 1982 4 3 7 57.1% 1 4 5 20.0% 1 2 3 33.3%
22 1982 1 3 4 25.0% 2 4 6 33.3% 0 3 3 0.0% 1983 2 2 4 50.0% — — — — — — — —
23 1983 2 3 5 40.0% 3 5 8 37.5% — — — — — — — — — — — — — — — — —
24 1984 2 2 4 50.0% 3 8 11 27.3% 1 2 3 33.3% — — — — — — — — — — — — —
25 1985 0 2 2 0.0% 1 2 3 33.3% — — — — 1986 1 1 2 50.0% — — — — — — — —
26 1986 — — — — 1 1 2 50.0% — — — — — — — — — — — — — — — — —
27 1987 1 2 3 33.3% 1 2 3 33.3% — — — — — — — — — — — — — — — — —
Career — 6 13 19 31.6% 11 22 33 33.3% 1 5 6 16.7% — 7 10 17 41.2% 1 5 6 16.7% 1 2 3 33.3%

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 Derek Tarr Schalk Van Der Merwe
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
17 — — — — — — — — — — — — — — — — 1978 1494 101.0 — — — — — — — 0.0% -3.50 — — — -0.07
19 — — — — — — — — — — — — — — — — 1980 1470 98.1 — — — — — — — 25.0% -2.38 0–2 — — -0.04
20 — — — — — — — — — — — — — — — — 1981 1456 97.6 — — — — — — — 0.0% -2.50 — 0–1 — +0.23
21 1981 1494 104.3 — — — — — — — 25.0% -3.75 — 1–0 — -0.13 1982 1527 115.7 — — — — +44 -41 +24 45.5% -0.14 3–4 (43%) 2–3 (40%) 100.6 +0.70
22 1982 1472 125.9 — — — — +61 +47 +30 36.8% -0.82 1–5 (17%) 0–1 — -0.14 1983 1536 100.0 — — — — +40 — — 40.0% -1.40 2–0 1–0 — +0.40
23 1983 1520 123.0 — — — — +15 +29 — 41.2% -0.71 1–2 (33%) 1–2 (33%) 98.4 -0.04 — — — — — — — — — — — — — — — —
24 1984 1549 123.2 — — — — +10 -8 -38 34.1% -0.98 1–3 (25%) 2–3 (40%) 96.4 -0.68 — — — — — — — — — — — — — — — —
25 1985 1525 109.0 — — — — — +4 — 30.8% -0.93 1–2 (33%) 2–3 (40%) 97.9 +0.05 1986 1550 104.3 — — — — — — — 50.0% -0.25 — 1–0 — -0.05
26 1986 1540 107.5 — — — — — — — 50.0% +0.25 — — — -0.18 — — — — — — — — — — — — — — — —
27 1987 1518 94.0 — — — — -16 +28 — 30.8% -2.08 1–0 — — +0.52 — — — — — — — — — — — — — — — —
Career — 1573 124.9 — — — — +19 +17 -4 36.0% -1.01 5–12 (29%) 6–9 (40%) 92.3 -1.03 — 1561 108.9 — — — — +43 -41 +24 40.0% -0.75 5–6 (45%) 4–4 (50%) 100.9 +4.50

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.