H2H data updated: 2026-09-02 00:00 UTC

Mike Cahill vs Byron Bertram H2H: 1-0

Mike Cahill holds a 1–0 lead over Byron Bertram in their ATP head-to-head. Across 1 main-draw meeting, Mike Cahill leads 1–0 on clay. Most recently, Mike Cahill won the 1977 Cincinnati Open round of 64 6-2 6-0.

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

Mike Cahill
USA Age 74 Right-Handed 183 cm / 6'0"
H2H
1 – 0
1 main draw meetings
Byron Bertram
RSA Age 73 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
Mike Cahill #107 6-2 6-0 Byron Bertram #66 Match data Jul 13, 1977* R64 Cincinnati Open 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
Mike Cahill #448 #58 0 1,727 100 156 39.1% 0 0 0 0 0 0
Byron Bertram #150 #57 0 1,815 115 139 45.3% 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 Mike Cahill Byron Bertram
YrW-LWin %RankEloGSTitles YrW-LWin %RankEloGSTitles
16 — — — — — — — 1969 0–3 0.0% — 1,467 0 0
17 — — — — — — — 1970 11–11 50.0% — 1,540 0 0
18 — — — — — — — 1971 9–13 40.9% — 1,547 0 0
19 — — — — — — — 1972 2–2 50.0% — 1,536 0 0
20 — — — — — — — 1973 11–10 52.4% #152 1,617 0 0
21 — — — — — — — 1974 15–13 53.6% #156 1,655 0 0
22 1974 4–4 50.0% #138 1,539 0 0 1975 5–8 38.5% #120 1,652 0 0
23 1975 10–17 37.0% #79 1,585 0 0 1976 23–24 48.9% #57 1,737 0 0
24 1976 13–27 32.5% #136 1,587 0 0 1977 21–27 43.8% #87 1,744 0 0
25 1977 10–18 35.7% #94 1,574 0 0 1978 10–11 47.6% #92 1,668 0 0
26 1978 17–20 45.9% #69 1,692 0 0 1979 1–2 33.3% #219 1,649 0 0
27 1979 18–25 41.9% #113 1,678 0 0 1980 7–15 31.8% #150 1,570 0 0
28 1980 10–19 34.5% #189 1,601 0 0 — — — — — — —
29 1981 6–10 37.5% #100 1,629 0 0 — — — — — — —
30 1982 12–14 46.2% #98 1,644 0 0 — — — — — — —
31 1983 0–2 0.0% #108 1,621 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 Mike Cahill Byron Bertram
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 %
16 — — — — — — — — — — — — — — — — — 1969 0 3 3 0.0% — — — — — — — — — — — —
17 — — — — — — — — — — — — — — — — — 1970 1 3 4 25.0% 2 3 5 40.0% 8 5 13 61.5% — — — —
18 — — — — — — — — — — — — — — — — — 1971 4 5 9 44.4% 0 2 2 0.0% 5 4 9 55.6% 0 2 2 0.0%
19 — — — — — — — — — — — — — — — — — 1972 1 1 2 50.0% — — — — 1 1 2 50.0% — — — —
20 — — — — — — — — — — — — — — — — — 1973 3 3 6 50.0% 1 3 4 25.0% 6 3 9 66.7% 1 1 2 50.0%
21 — — — — — — — — — — — — — — — — — 1974 3 1 4 75.0% 1 4 5 20.0% 1 1 2 50.0% 10 7 17 58.8%
22 1974 — — — — 3 3 6 50.0% — — — — 1 1 2 50.0% 1975 1 3 4 25.0% 3 3 6 50.0% 1 1 2 50.0% 0 1 1 0.0%
23 1975 3 4 7 42.9% 6 9 15 40.0% — — — — 1 4 5 20.0% 1976 7 4 11 63.6% 13 15 28 46.4% 0 1 1 0.0% 3 4 7 42.9%
24 1976 1 4 5 20.0% 9 15 24 37.5% 0 2 2 0.0% 3 6 9 33.3% 1977 7 10 17 41.2% 4 7 11 36.4% 6 3 9 66.7% 4 7 11 36.4%
25 1977 2 3 5 40.0% 5 9 14 35.7% 0 1 1 0.0% 3 5 8 37.5% 1978 0 3 3 0.0% 0 1 1 0.0% 0 1 1 0.0% 10 6 16 62.5%
26 1978 5 6 11 45.5% 6 5 11 54.5% — — — — 6 9 15 40.0% 1979 0 1 1 0.0% — — — — — — — — 1 1 2 50.0%
27 1979 9 9 18 50.0% 8 8 16 50.0% 0 3 3 0.0% 1 5 6 16.7% 1980 4 6 10 40.0% 0 3 3 0.0% 1 4 5 20.0% 2 2 4 50.0%
28 1980 4 4 8 50.0% 6 9 15 40.0% — — — — 0 6 6 0.0% — — — — — — — — — — — — — — — — —
29 1981 5 5 10 50.0% 0 2 2 0.0% — — — — 1 3 4 25.0% — — — — — — — — — — — — — — — — —
30 1982 4 5 9 44.4% 6 4 10 60.0% — — — — 2 5 7 28.6% — — — — — — — — — — — — — — — — —
31 1983 — — — — 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — — — — — —
Career — 33 40 73 45.2% 49 66 115 42.6% 0 6 6 0.0% 18 44 62 29.0% — 31 43 74 41.9% 24 41 65 36.9% 29 24 53 54.7% 31 31 62 50.0%

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 Mike Cahill Byron Bertram
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
16 — — — — — — — — — — — — — — — — 1969 1467 97.7 — — — — +26 — — 20.0% -2.20 — — — -0.10
17 — — — — — — — — — — — — — — — — 1970 1541 119.6 — — — — -55 -40 +104 49.1% -0.21 0–1 — — +0.86
18 — — — — — — — — — — — — — — — — 1971 1547 108.9 — — — — -39 — +97 47.5% -0.13 2–7 (22%) 3–2 (60%) — +2.12
19 — — — — — — — — — — — — — — — — 1972 1536 105.5 — — — — — — — 54.5% +1.27 — 0–1 — +0.31
20 — — — — — — — — — — — — — — — — 1973 1618 113.6 — — — — +1 -147 +39 49.0% -0.12 5–3 (63%) 2–2 (50%) — +1.62
21 — — — — — — — — — — — — — — — — 1974 1655 122.3 — — — — +78 -202 — 53.2% +0.08 5–3 (63%) 5–2 (71%) — +2.72
22 1974 1540 112.1 — — — — — +29 — 50.0% -0.44 1–1 3–0 (100%) — +0.47 1975 1653 123.3 — — — — +13 -136 — 44.1% -0.26 2–3 (40%) 3–2 (60%) — -0.16
23 1975 1586 128.8 — — — — 0 -9 — 42.9% -0.51 2–9 (18%) 3–2 (60%) — +0.58 1976 1737 135.3 — — — — +19 -143 — 48.7% -0.04 10–8 (56%) 5–6 (45%) — -0.81
24 1976 1587 130.4 — — — — -15 -18 — 36.8% -0.84 4–7 (36%) 5–3 (63%) — -1.12 1977 1745 136.0 — — — — -14 -174 +50 43.4% -0.53 11–5 (69%) 4–7 (36%) — -2.84
25 1977 1574 122.9 — — — — +16 -15 — 40.3% -0.63 4–7 (36%) 6–4 (60%) — +1.24 1978 1668 116.8 — — — — +30 — — 45.7% -0.35 2–1 (67%) 3–1 (75%) — +3.30
26 1978 1692 139.6 — — — — -36 -53 — 45.8% +0.05 5–4 (56%) 2–8 (20%) — +0.86 1979 1650 106.6 — — — — +23 — — 28.6% -0.86 1–0 0–1 — +0.39
27 1979 1679 129.0 — — — — -28 +8 -236 42.7% -0.57 7–6 (54%) 5–6 (45%) — +0.42 1980 1570 124.2 — — — — +66 -71 +169 38.9% -0.57 2–5 (29%) 5–6 (45%) — -0.40
28 1980 1602 134.8 — — — — +14 +31 — 35.5% -0.68 1–4 (20%) 2–7 (22%) — -0.50 — — — — — — — — — — — — — — — —
29 1981 1630 125.6 — — — — +36 — — 44.7% -0.55 1–2 (33%) 4–2 (67%) — +0.59 — — — — — — — — — — — — — — — —
30 1982 1644 127.1 — — — — -2 +3 — 46.6% -0.35 4–5 (44%) 5–2 (71%) — +1.34 — — — — — — — — — — — — — — — —
31 1983 1621 97.8 — — — — — — — 0.0% -2.75 — — — -0.27 — — — — — — — — — — — — — — — —
Career — 1728 136.1 — — — — -7 -5 -236 41.6% -0.53 29–45 (39%) 35–34 (51%) 100.1 +1.42 — 1816 130.3 — — — — +20 -141 +86 46.2% -0.25 40–36 (53%) 30–30 (50%) 106.0 +2.79

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.