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Tadashi Shiraishi's career best to date is 597.5 kg, set in 2014 at age 33. Their total grew 225 kg over 14.1 years between their first meet and that mark (~16.0 kg/year). 8.2-year gap in their competition record between 2005 and 2013.
Career-best meet: Japanese Powerlifting Championships · JPA
| Date | Meet | Equipment | Squat (kg) | Bench (kg) | Deadlift (kg) | Total (kg) | DOTS |
|---|---|---|---|---|---|---|---|
| 2000-05-28 | Japanese Student Powerlifting Championships | Single-ply | 135 | 80 | 157.5 | 372.5 | 356.78 |
| 2001-05-27 | Japanese Student Powerlifting Championships | Single-ply | 152.5 | 85 | 167.5 | 405 | 391.49 |
| 2002-06-01 | Japanese Juniors & Masters Nationals | Single-ply | 185 | 97.5 | 190 | 472.5 | 427.1 |
| 2003-03-09 | Japanese Classic Powerlifting Championships | Raw | 155 | 95 | 200 | 450 | 404.3 |
| 2003-09-09 | World Juniors Powerlifting Championships | Single-ply | 180 | 122.5 | 195 | 497.5 | 451.01 |
| 2004-03-07 | Japanese Classic Powerlifting Championships | Raw | 150 | 102.5 | 190 | 442.5 | 399.47 |
| 2004-07-16 | Japanese Powerlifting Championships | Single-ply | 182.5 | 137.5 | 210 | 530 | 482.04 |
| 2005-03-13 | Japanese Classic Powerlifting Championships | Raw | 145 | 110 | 200 | 455 | 410.23 |
| 2013-05-31 | Japanese Powerlifting Championships | Single-ply | 212.5 | 145 | 220 | 577.5 | 500.7 |
| 2014-06-21 | Japanese Powerlifting Championships | Single-ply | 215 | 150 | 232.5 | 597.5 | 518.19 |
| 2014-11-29 | Japanese Bench Press Championships | Single-ply | — | 152.5 | — | — | 132.14 |
| 2015-07-05 | Kinki Bench Press Championships | Single-ply | — | 150 | — | — | 130.82 |
| 2015-07-20 | Asian Powerlifting Championships | Single-ply | 180 | 147.5 | 200 | 527.5 | 468.84 |
| 2015-10-18 | Osaka Bench Press Championships | Raw | — | 150 | — | — | 129.86 |
| 2016-05-27 | Japanese Powerlifting Championships | Single-ply | 210 | 152.5 | 222.5 | 585 | 510.58 |
| 2016-07-10 | Kinki Bench Press Championships | Single-ply | — | 142.5 | — | — | 122.84 |
| 2016-11-13 | Osaka Bench Press Championships | Single-ply | — | 142.5 | — | — | 123.73 |
| 2017-07-09 | Kinki Bench Press Championships | Single-ply | — | 137.5 | — | — | 118.7 |
| 2017-07-15 | Japanese Powerlifting Championships | Single-ply | 200 | 137.5 | 215 | 552.5 | 476.6 |
| 2017-11-12 | Osaka Bench Press Championships | Single-ply | — | 145 | — | — | 125.53 |
| 2018-01-27 | Japanese Bench Press Championships | Single-ply | — | 150 | — | — | 129.86 |
| 2018-06-16 | Japanese Powerlifting Championships | Single-ply | 210 | 147.5 | 215 | 572.5 | 493.85 |
| 2018-07-15 | Kinki Bench Press Championships | Raw | — | 117.5 | — | — | 101.5 |
| 2018-09-22 | Shiawaseki National Body Powerlifting Competition | Raw | 175 | 120 | 210 | 505 | 436.25 |
| 2019-04-07 | Osaka Powerlifting Championships | Raw | 175 | 115 | 200 | 490 | 423.3 |
| 2019-04-27 | Japanese Powerlifting Championships | Single-ply | 207.5 | 142.5 | 215 | 565 | 493.12 |
| 2019-09-21 | National Sports Tournament | Raw | 170 | 117.5 | 215 | 502.5 | 434.41 |
| 2020-08-29 | Japanese Powerlifting Championships | Single-ply | 200 | 140 | 212.5 | 552.5 | 481.85 |
| 2020-12-19 | Japanese Juniors Sub-Juniors & Masters Classic Powerlifting Championships | Raw | 170 | 110 | 205 | 485 | 423.3 |
| 2021-04-04 | Osaka Powerlifting Championships | Raw | 150 | 115 | 205 | 470 | 404.85 |
| 2021-04-24 | Japanese Powerlifting Championships | Single-ply | 205 | 135 | 230 | 570 | 492.05 |
| 2025-07-06 | Asian/Pacific/African Classic & Equipped Championships | Single-ply | 190 | 135 | 205 | 530 | 459.52 |
| 2025-10-10 | World Classic & Equipped Masters Powerlifting Championships | Single-ply | 185 | 135 | 200 | 520 | 449.86 |
vs Single-ply · 59 kg class · masters-1 · Japan · drug-tested
vs Single-ply · 59 kg class · masters-1 · drug-tested
vs Single-ply · 59 kg class · open · drug-tested
vs Single-ply · 59 kg class · open · drug-tested