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John Slack's career best to date is 522.5 kg, set in 2026 at age 63. Their total grew 70 kg over 6.9 years between their first meet and that mark (~10.2 kg/year). 2.2-year gap in their competition record between 2017 and 2019. Career variance was 82% squat-driven.
Career-best meet: Tested Northeast Regionals at Shamrock Showdown · USPA
| Date | Meet | Equipment | Squat (kg) | Bench (kg) | Deadlift (kg) | Total (kg) | DOTS |
|---|---|---|---|---|---|---|---|
| 2016-12-02 | Colorado State Championships | Raw | — | 130 | — | — | 88.83 |
| 2017-02-11 | Colorado State Championships | Raw | — | 142.5 | — | — | 97.62 |
| 2019-05-05 | Gorilla Warfare III Final Conflict | Raw | 132.5 | 135 | 185 | 452.5 | 309.17 |
| 2021-06-12 | Colorado State Championships | Raw | 150 | 140 | 190 | 480 | 327.14 |
| 2021-08-28 | Tournament of Power | Raw | 150 | 137.5 | 187.5 | 475 | 324.47 |
| 2022-03-19 | Military-Police-Firefighter Nationals | Raw | 155 | 142.5 | 195 | 492.5 | 335.57 |
| 2022-11-05 | Fall Festival of Power | Raw | 157.5 | 137.5 | 190 | 485 | 332.13 |
| 2023-06-11 | Drug Tested River City Championships | Raw | 165 | 143 | 200 | 508 | 348.67 |
| 2024-03-16 | Tested Northwest Power Cup Regional Championships | Raw | 172.5 | 140 | 197.5 | 510 | 347.88 |
| 2024-11-08 | Tested North American Championships | Raw | 175 | 140 | 202.5 | 517.5 | 354.51 |
| 2025-04-19 | Empire Classic | Raw | 155 | 137.5 | 192.5 | 485 | 331.77 |
| 2025-08-23 | Iron Games | Raw | 155 | 140 | 200 | 495 | 338.13 |
| 2026-03-21 | Tested Northeast Regionals at Shamrock Showdown | Raw | 177.5 | 140 | 205 | 522.5 | 358.19 |
vs Raw · 82.5 kg class · masters-3 · USA · drug-tested
vs Raw · 82.5 kg class · masters-3 · drug-tested