H2H data updated: 2026-10-08 00:00 UTC

William Brown vs Robert Kreiss H2H: 1-0

William Brown holds a 1–0 lead over Robert Kreiss in their ATP head-to-head. Across 1 main-draw meeting, William Brown leads 1–0 on clay. Most recently, William Brown won the 1975 Canadian Open round of 64 6-2 5-7 7-6.

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William Brown
USA Age 81 Right-Handed
H2H
1 – 0
1 main-draw meetings
Robert Kreiss
USA Age 73

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
William Brown 6-2 5-7 7-6 Robert Kreiss Match data Aug 13, 1975* R64 Canadian Open ATP 500 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
William Brown #436 #86 0 1,555 28 81 25.7% 0 0 0 0 0 0
Robert Kreiss — — — 1,559 — — — 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 William Brown Robert Kreiss
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
23 1968 2–6 25.0% — 1,442 0 0 — — — — — — —
24 1969 2–5 28.6% — 1,448 0 0 — — — — — — —
25 1970 1–7 12.5% — 1,425 0 0 — — — — — — —
26 1971 1–6 14.3% — 1,415 0 0 — — — — — — —
27 1972 3–8 27.3% — 1,440 0 0 — — — — — — —
28 1973 2–12 14.3% #224 1,409 0 0 — — — — — — —
29 1974 11–19 36.7% #86 1,549 0 0 — — — — — — —
30 1975 5–16 23.8% #165 1,485 0 0 — — — — — — —
31 1976 1–1 50.0% #239 1,511 0 0 — — — — — — —
32 1977 0–1 0.0% #366 1,492 0 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 William Brown Robert Kreiss
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 — — — — — — — — — — — — — — — — 1968 1488 101.1 — — — — — — — 33.3% -0.67 0–1 — — -0.09
16 — — — — — — — — — — — — — — — — 1969 1474 99.6 — — — — — — — 33.3% -1.33 0–1 — — +0.08
17 — — — — — — — — — — — — — — — — 1970 1470 97.8 — — — — — — — 0.0% -3.50 — — — -0.26
18 — — — — — — — — — — — — — — — — 1971 1451 99.3 — — — — +54 — — 23.1% -2.00 0–1 1–1 — +0.25
19 — — — — — — — — — — — — — — — — 1972 1440 107.0 — — — — +72 — — 33.3% -1.67 0–2 2–0 — +0.43
20 — — — — — — — — — — — — — — — — 1973 1458 113.4 — — — — +83 — — 35.0% -0.90 1–3 (25%) 1–4 (20%) 96.0 -0.11
21 — — — — — — — — — — — — — — — — 1974 1490 120.6 — — — — +66 -36 -23 34.5% -0.88 3–5 (38%) 1–4 (20%) 97.4 +0.26
22 — — — — — — — — — — — — — — — — 1975 1490 125.4 — — — — +67 -44 — 37.3% -1.05 2–6 (25%) 3–2 (60%) 99.1 +0.55
23 1968 1443 97.1 — — — — — +51 -1 31.6% -0.95 0–1 — — +0.02 — — — — — — — — — — — — — — — —
24 1969 1449 101.9 — — — — +136 +5 — 29.4% -1.29 1–1 — — -0.32 — — — — — — — — — — — — — — — —
25 1970 1426 102.9 — — — — +82 — +33 31.8% -1.32 0–3 (0%) — — +0.14 — — — — — — — — — — — — — — — —
26 1971 1415 98.5 — — — — +22 — — 21.4% -1.64 1–1 0–1 — +0.06 — — — — — — — — — — — — — — — —
27 1972 1441 106.2 — — — — +6 — +72 37.0% -0.63 1–2 (33%) 1–3 (25%) 97.4 +0.30 — — — — — — — — — — — — — — — —
28 1973 1410 107.0 — — — — +31 — +18 24.2% -1.79 1–2 (33%) 3–3 (50%) 99.0 +0.02 — — — — — — — — — — — — — — — —
29 1974 1550 114.9 — — — — -55 -68 -71 37.7% -1.26 1–3 (25%) 6–5 (55%) 99.7 +0.70 — — — — — — — — — — — — — — — —
30 1975 1486 110.8 — — — — -1 -31 — 28.8% -1.54 4–3 (57%) 4–4 (50%) 102.6 +1.07 — — — — — — — — — — — — — — — —
31 1976 1512 113.6 — — — — — — — 40.0% -0.20 1–0 1–0 — -0.37 — — — — — — — — — — — — — — — —
32 1977 1493 94.5 — — — — — — — 0.0% -3.00 — 0–1 — +0.28 — — — — — — — — — — — — — — — —
Career — 1556 110.6 — — — — +11 -32 +2 31.5% -1.32 10–16 (38%) 15–17 (47%) 97.3 +1.79 — 1560 121.0 — — — — +68 -41 -23 34.1% -1.12 6–19 (24%) 8–11 (42%) 92.7 +1.63

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.