H2H data updated: 2026-09-03 00:00 UTC

Pieter Aldrich vs Michael Westphal H2H: 0-1

Michael Westphal holds a 1–0 lead over Pieter Aldrich in their ATP head-to-head. Across 1 main-draw meeting, Michael Westphal leads 1–0 on carpet. Most recently, Michael Westphal won the 1989 Philadelphia round of 64 6-1 6-2.

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Pieter Aldrich
RSA Age 60 Right-Handed 180 cm / 5'11"
H2H
0 – 1
1 main draw meetings
Michael Westphal
GER Right-Handed 190 cm / 6'3"

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Michael Westphal #154 6-1 6-2 Pieter Aldrich #72 Match data Feb 22, 1989* R64 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.

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
Pieter Aldrich #1,122 #64 256 1,675 36 40 47.4% 0 0 0 0 1 1
Michael Westphal #1,050 #49 81 1,755 73 97 42.9% 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 Pieter Aldrich Michael Westphal
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
17 — — — — — — — 1982 4–6 40.0% — 1,556 0 0
18 — — — — — — — 1983 7–9 43.8% #96 1,569 0 0
19 — — — — — — — 1984 19–14 57.6% #73 1,712 0 0
20 1986 1–1 50.0% #275 1,512 0 0 1985 15–16 48.4% #51 1,702 0 0
21 1987 1–1 50.0% #134 1,535 0 0 1986 12–21 36.4% #101 1,642 0 0
22 1988 15–15 50.0% #68 1,662 0 0 1987 5–15 25.0% #279 1,566 0 0
23 1989 13–19 40.6% #125 1,619 0 0 1988 6–9 40.0% #116 1,554 0 0
24 1990 6–4 60.0% #192 1,663 0 1 1989 5–7 41.7% #233 1,566 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 Pieter Aldrich Michael Westphal
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 %
17 — — — — — — — — — — — — — — — — — 1982 4 3 7 57.1% 0 2 2 0.0% — — — — 0 1 1 0.0%
18 — — — — — — — — — — — — — — — — — 1983 2 5 7 28.6% 5 4 9 55.6% — — — — — — — —
19 — — — — — — — — — — — — — — — — — 1984 10 7 17 58.8% 8 5 13 61.5% 0 1 1 0.0% 1 1 2 50.0%
20 1986 1 1 2 50.0% — — — — — — — — — — — — 1985 3 5 8 37.5% 12 10 22 54.5% — — — — 0 1 1 0.0%
21 1987 1 1 2 50.0% — — — — — — — — — — — — 1986 7 7 14 50.0% 2 11 13 15.4% 1 1 2 50.0% 2 2 4 50.0%
22 1988 11 10 21 52.4% 0 1 1 0.0% 4 4 8 50.0% — — — — 1987 4 9 13 30.8% 1 5 6 16.7% 0 1 1 0.0% — — — —
23 1989 8 11 19 42.1% — — — — 3 4 7 42.9% 2 4 6 33.3% 1988 0 2 2 0.0% 5 6 11 45.5% — — — — 1 1 2 50.0%
24 1990 0 3 3 0.0% — — — — 5 0 5 100.0% 1 1 2 50.0% 1989 1 3 4 25.0% 3 2 5 60.0% — — — — 1 2 3 33.3%
Career — 21 26 47 44.7% 0 1 1 0.0% 12 8 20 60.0% 3 5 8 37.5% — 31 41 72 43.1% 36 45 81 44.4% 1 3 4 25.0% 5 8 13 38.5%

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 Pieter Aldrich Michael Westphal
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 — — — — — — — — — — — — — — — — 1982 1557 126.4 — — — — +47 — — 45.8% -0.12 1–3 (25%) 1–0 — -0.27
18 — — — — — — — — — — — — — — — — 1983 1570 120.2 — — — — -2 -3 — 48.8% -0.12 3–6 (33%) 3–4 (43%) — +0.83
19 — — — — — — — — — — — — — — — — 1984 1712 143.7 — — — — -22 -44 — 56.6% +0.41 4–5 (44%) 9–5 (64%) — -0.25
20 1986 1513 110.1 — — — — — — — 50.0% +0.17 1–1 — — +0.09 1985 1703 130.1 — — — — -43 -9 — 46.8% -0.66 8–6 (57%) 9–4 (69%) — -1.63
21 1987 1536 112.9 — — — — — — — 50.0% -1.00 — — — -0.32 1986 1642 120.8 — — — — +20 -45 — 37.8% -0.96 6–5 (55%) 5–6 (45%) — -1.25
22 1988 1662 129.6 — — — — +17 — -56 51.3% -0.08 5–6 (45%) 7–7 (50%) — +0.62 1987 1566 126.7 — — — — +46 +3 — 32.7% -1.06 1–4 (20%) 1–3 (25%) — -1.24
23 1989 1620 119.5 — — — — +5 — -29 43.3% -0.48 7–7 (50%) 4–4 (50%) — +0.20 1988 1554 114.4 — — — — +23 +43 — 38.2% -0.82 3–1 (75%) 1–4 (20%) — +0.39
24 1990 1664 118.5 — — — — -66 — +47 52.2% +0.04 2–0 2–1 (67%) — +0.37 1989 1566 117.9 — — — — -15 +56 — 40.6% -0.25 4–2 (67%) 2–5 (29%) — +0.38
Career — 1676 127.4 — — — — +3 — -21 47.8% -0.25 15–14 (52%) 13–12 (52%) 101.1 +1.26 — 1755 134.6 — — — — +6 -8 — 44.3% -0.46 30–32 (48%) 31–31 (50%) 100.8 -1.79

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.