H2H data updated: 2026-09-06 00:00 UTC
Peter Rennert holds a 1–0 lead over Shinichi Sakamoto in their ATP head-to-head. Across 1 main-draw meeting, Peter Rennert leads 1–0 on clay. Most recently, Peter Rennert won the 1980 Japan Open round of 64 6-1 6-2.
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| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Peter Rennert | 6-1 6-2 | Shinichi Sakamoto | Match data | Oct 22, 1980* | R64 | Japan 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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Shinichi Sakamoto | #1,020 | #274 | 2 | 1,500 | 1 | 7 | 12.5% | 0 | 0 | 0 | 0 | 0 | 0 |
| Peter Rennert | #806 | #40 | 0 | 1,770 | 49 | 60 | 45.0% | 0 | 0 | 0 | 0 | 0 | 0 |
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 | Shinichi Sakamoto | Peter Rennert | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 20 | — | — | — | — | — | — | — | 1979 | 5–6 | 45.5% | #60 | 1,551 | 0 | 0 |
| 21 | — | — | — | — | — | — | — | 1980 | 18–16 | 52.9% | #63 | 1,732 | 0 | 0 |
| 22 | — | — | — | — | — | — | — | 1981 | 10–14 | 41.7% | #58 | 1,691 | 0 | 0 |
| 23 | — | — | — | — | — | — | — | 1982 | 13–17 | 43.3% | #96 | 1,641 | 0 | 0 |
| 24 | 1978 | 0–1 | 0.0% | #374 | 1,487 | 0 | 0 | 1983 | 3–5 | 37.5% | #115 | 1,638 | 0 | 0 |
| 25 | 1979 | 0–1 | 0.0% | #454 | 1,471 | 0 | 0 | 1984 | 0–2 | 0.0% | #434 | 1,609 | 0 | 0 |
| 26 | 1980 | 0–1 | 0.0% | #390 | 1,460 | 0 | 0 | — | — | — | — | — | — | — |
| 27 | 1981 | 1–1 | 50.0% | — | 1,474 | 0 | 0 | — | — | — | — | — | — | — |
| 29 | 1983 | 0–1 | 0.0% | #473 | 1,467 | 0 | 0 | — | — | — | — | — | — | — |
| 30 | 1984 | 0–2 | 0.0% | #555 | 1,453 | 0 | 0 | — | — | — | — | — | — | — |
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 | Shinichi Sakamoto | Peter Rennert | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1979 | 1552 | 115.8 | — | — | — | — | -22 | — | +46 | 48.3% | -0.07 | 0–1 | 2–2 (50%) | — | +1.40 |
| 21 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1980 | 1733 | 132.0 | — | — | — | — | -169 | -155 | +5 | 52.2% | +0.03 | 5–6 (45%) | 10–6 (63%) | 103.0 | +1.48 |
| 22 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1981 | 1692 | 136.3 | — | — | — | — | -78 | — | +36 | 43.5% | -0.34 | 4–6 (40%) | 3–6 (33%) | 96.8 | -1.41 |
| 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1982 | 1642 | 129.7 | — | — | — | — | -51 | -72 | +74 | 46.9% | -0.23 | 4–7 (36%) | 6–3 (67%) | 101.4 | -0.03 |
| 24 | 1978 | 1487 | 99.7 | — | — | — | — | — | — | — | 33.3% | -2.00 | 0–1 | 1–0 | — | +0.11 | 1983 | 1639 | 111.9 | — | — | — | — | -54 | — | — | 37.5% | -1.50 | 2–0 | 2–1 (67%) | — | -0.48 |
| 25 | 1979 | 1472 | 97.9 | — | — | — | — | — | — | — | 33.3% | -2.33 | 0–1 | 1–0 | — | +0.19 | 1984 | 1609 | 102.2 | — | — | — | — | — | — | — | 0.0% | -2.50 | — | 0–1 | — | +0.08 |
| 26 | 1980 | 1460 | 94.5 | — | — | — | — | — | — | — | 0.0% | -4.50 | — | — | — | +0.09 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 27 | 1981 | 1475 | 108.6 | — | — | — | — | — | — | — | 60.0% | +0.80 | 0–1 | — | — | +0.04 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 1983 | 1468 | 101.8 | — | — | — | — | — | — | — | 0.0% | -3.00 | — | — | — | -0.08 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 1984 | 1454 | 101.5 | — | — | — | — | — | — | — | 20.0% | -2.40 | 0–1 | 1–0 | — | -0.09 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1500 | 102.0 | — | — | — | — | — | — | — | 30.0% | -1.80 | 0–4 (0%) | 3–0 (100%) | 98.1 | +3.25 | — | 1771 | 134.1 | — | — | — | — | -86 | -124 | +34 | 46.8% | -0.26 | 15–20 (43%) | 23–19 (55%) | 102.1 | +0.95 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Tom Gullikson | 0 | 1 | 1 | Oct 25, 1984 | — |
| Jay Lapidus | 0 | 1 | 1 | Oct 10, 1984 | H2H |
| Gianni Ocleppo | 0 | 1 | 1 | Oct 19, 1983 | H2H |
| Heinz Gunthardt | 0 | 1 | 1 | Oct 22, 1981 | H2H |
| Toyokazu Tomogane | 1 | 0 | 1 | Oct 21, 1981 | — |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Brian Teacher | 0 | 5 | 5 | Jun 9, 1982 | H2H |
| Rod Frawley | 2 | 1 | 3 | Oct 19, 1983 | H2H |
| Johan Kriek | 1 | 2 | 3 | Jun 27, 1982 | H2H |
| Brian Gottfried | 1 | 2 | 3 | Feb 4, 1982 | H2H |
| Bill Scanlon | 0 | 2 | 2 | Sep 20, 1984 | H2H |