H2H data updated: 2026-10-17 00:00 UTC

J. Mandarino vs Byron Bertram H2H: 1-0

J. Mandarino holds a 1–0 lead over Byron Bertram in their ATP head-to-head. Across 1 main-draw meeting, J. Mandarino leads 1–0 on hard courts. Most recently, J. Mandarino won the 1971 Salisbury round of 64 6-1 6-4.

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

J. Mandarino
BRA Age 85 Right-Handed 173 cm / 5'8"
H2H
1 – 0
1 main-draw meetings
Byron Bertram
RSA Age 73 Right-Handed

H2H Match Log

PlayerScorePlayerMatch DataDateRoundTournamentCategorySurface
J. Mandarino 6-1 6-4 Byron Bertram Match data Feb 23, 1971* R64 Salisbury ATP 250 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
J. Mandarino #793 #81 0 1,714 86 99 46.5% 0 0 0 0 0 0
Byron Bertram #150 #57 0 1,815 115 138 45.5% 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 J. Mandarino 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 11–9 55.0% #152 1,623 0 0
21 — — — — — — — 1974 15–13 53.6% #156 1,657 0 0
22 — — — — — — — 1975 5–8 38.5% #120 1,654 0 0
23 — — — — — — — 1976 23–24 48.9% #57 1,737 0 0
24 — — — — — — — 1977 21–27 43.8% #87 1,744 0 0
25 — — — — — — — 1978 10–11 47.6% #92 1,668 0 0
26 — — — — — — — 1979 1–2 33.3% #219 1,649 0 0
27 1968 25–14 64.1% — 1,691 0 0 1980 7–15 31.8% #150 1,570 0 0
28 1969 10–12 45.5% — 1,594 0 0 — — — — — — —
29 1970 5–6 45.5% — 1,627 0 0 — — — — — — —
30 1971 11–9 55.0% — 1,644 0 0 — — — — — — —
31 1972 8–6 57.1% — 1,682 0 0 — — — — — — —
32 1973 9–19 32.1% #104 1,653 0 0 — — — — — — —
33 1974 6–10 37.5% #129 1,625 0 0 — — — — — — —
34 1975 8–12 40.0% #120 1,567 0 0 — — — — — — —
35 1976 4–9 30.8% #180 1,530 0 0 — — — — — — —
36 1977 0–2 0.0% #253 1,493 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 J. Mandarino 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 2 3 33.3% 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 — — — — — — — — — — — — — — — — — 1975 1 3 4 25.0% 3 3 6 50.0% 1 1 2 50.0% 0 1 1 0.0%
23 — — — — — — — — — — — — — — — — — 1976 7 4 11 63.6% 13 15 28 46.4% 0 1 1 0.0% 3 4 7 42.9%
24 — — — — — — — — — — — — — — — — — 1977 7 10 17 41.2% 4 7 11 36.4% 6 3 9 66.7% 4 7 11 36.4%
25 — — — — — — — — — — — — — — — — — 1978 0 3 3 0.0% 0 1 1 0.0% 0 1 1 0.0% 10 6 16 62.5%
26 — — — — — — — — — — — — — — — — — 1979 0 1 1 0.0% — — — — — — — — 1 1 2 50.0%
27 1968 6 4 10 60.0% 17 9 26 65.4% 2 1 3 66.7% — — — — 1980 4 6 10 40.0% 0 3 3 0.0% 1 4 5 20.0% 2 2 4 50.0%
28 1969 0 3 3 0.0% 10 5 15 66.7% 0 2 2 0.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — —
29 1970 2 2 4 50.0% 1 3 4 25.0% 2 1 3 66.7% — — — — — — — — — — — — — — — — — — — — —
30 1971 5 3 8 62.5% 4 4 8 50.0% 2 2 4 50.0% — — — — — — — — — — — — — — — — — — — — —
31 1972 1 1 2 50.0% 7 3 10 70.0% 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — —
32 1973 2 5 7 28.6% 6 7 13 46.2% 0 1 1 0.0% 1 6 7 14.3% — — — — — — — — — — — — — — — — —
33 1974 0 1 1 0.0% 5 7 12 41.7% 0 1 1 0.0% 1 1 2 50.0% — — — — — — — — — — — — — — — — —
34 1975 — — — — 8 10 18 44.4% 0 2 2 0.0% — — — — — — — — — — — — — — — — — — — — —
35 1976 — — — — 4 8 12 33.3% — — — — 0 1 1 0.0% — — — — — — — — — — — — — — — — —
36 1977 — — — — 0 1 1 0.0% 0 1 1 0.0% — — — — — — — — — — — — — — — — — — — — —
Career — 16 19 35 45.7% 62 57 119 52.1% 6 13 19 31.6% 2 10 12 16.7% — 31 43 74 41.9% 24 40 64 37.5% 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 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 J. Mandarino 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 108.8 — — — — -39 — +97 47.5% -0.13 2–7 (22%) 3–2 (60%) 96.3 +2.12
19 — — — — — — — — — — — — — — — — 1972 1536 105.5 — — — — — — — 54.5% +1.27 — 0–1 — +0.31
20 — — — — — — — — — — — — — — — — 1973 1624 113.9 — — — — -6 -146 +33 51.0% +0.04 5–3 (63%) 2–2 (50%) 102.7 +1.60
21 — — — — — — — — — — — — — — — — 1974 1657 122.3 — — — — +76 -198 — 53.2% +0.08 5–3 (63%) 5–2 (71%) 106.5 +2.71
22 — — — — — — — — — — — — — — — — 1975 1654 123.3 — — — — +12 -132 — 44.1% -0.26 2–3 (40%) 3–2 (60%) 99.5 -0.16
23 — — — — — — — — — — — — — — — — 1976 1738 135.3 — — — — +18 -142 — 48.7% -0.04 10–8 (56%) 5–6 (45%) 102.7 -0.82
24 — — — — — — — — — — — — — — — — 1977 1745 136.0 — — — — -13 -174 +50 43.4% -0.53 11–5 (69%) 4–7 (36%) 107.4 -2.84
25 — — — — — — — — — — — — — — — — 1978 1668 116.8 — — — — +30 — — 45.7% -0.35 2–1 (67%) 3–1 (75%) 102.2 +3.30
26 — — — — — — — — — — — — — — — — 1979 1650 106.6 — — — — +23 — — 28.6% -0.86 1–0 0–1 — +0.39
27 1968 1692 120.5 — — — — -97 +41 -135 61.0% +0.86 4–3 (57%) — — +0.05 1980 1570 124.2 — — — — +66 -70 +169 38.9% -0.57 2–5 (29%) 5–6 (45%) 96.6 -0.40
28 1969 1594 108.5 — — — — -95 +142 — 50.9% +0.22 1–3 (25%) — — +2.83 — — — — — — — — — — — — — — — —
29 1970 1627 121.9 — — — — -88 +79 -47 51.5% -0.06 0–2 — — +0.28 — — — — — — — — — — — — — — — —
30 1971 1645 115.8 — — — — -52 +50 -65 51.1% +0.08 2–1 (67%) 2–1 (67%) 102.1 +1.09 — — — — — — — — — — — — — — — —
31 1972 1682 116.4 — — — — — +102 — 51.1% -0.16 2–1 (67%) 3–1 (75%) 103.2 +1.29 — — — — — — — — — — — — — — — —
32 1973 1653 130.4 — — — — -77 +96 — 34.8% -0.82 4–4 (50%) 1–5 (17%) 98.8 -2.18 — — — — — — — — — — — — — — — —
33 1974 1625 120.3 — — — — — +96 — 34.2% -1.08 3–3 (50%) — — -0.13 — — — — — — — — — — — — — — — —
34 1975 1568 122.3 — — — — — +81 — 42.9% -0.24 3–5 (38%) 0–4 (0%) 92.6 +0.92 — — — — — — — — — — — — — — — —
35 1976 1530 106.8 — — — — — +55 — 33.3% -1.12 2–1 (67%) 0–2 — +0.73 — — — — — — — — — — — — — — — —
36 1977 1494 100.7 — — — — — — — 0.0% -3.00 — 0–1 — +0.24 — — — — — — — — — — — — — — — —
Career — 1714 125.0 — — — — -80 +80 -81 47.4% -0.10 21–23 (48%) 6–14 (30%) 94.4 +2.84 — 1816 130.3 — — — — +19 -140 +85 46.3% -0.24 40–36 (53%) 30–30 (50%) 105.9 +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.