| Career - Worst On-Base | |||
| Rk | Player Name | Totals | |
| 1 | Miguel Montero | 0.274 | |
| 2 | Elias Diaz | 0.277 | |
| 3 | Starlin Castro | 0.278 | |
| 4 | Daniel Descalso | 0.281 | |
| 5 | Michael Harris II | 0.289 | |
| 6 | Jazz Chisholm | 0.292 | |
| 7 | Amed Rosario | 0.293 | |
| 8 | Nico Hoerner | 0.294 | |
| 9 | J.T. Realmuto | 0.307 | |
| 10 | Kyle Lewis | 0.312 | |
| 11 | Kris Bryant | 0.313 | |
| 12 | Wilmer Flores | 0.313 | |
| 13 | C.J. Cron | 0.320 | |
| 14 | Anthony Rizzo | 0.322 | |
| 15 | Mike Yastrzemski | 0.324 | |
| 16 | Charlie Blackmon | 0.330 | |
| 17 | Ketel Marte | 0.335 | |
| 18 | Josh Reddick | 0.346 | |
| 19 | Dexter Fowler | 0.349 | |
| 20 | Jeff McNeil | 0.351 | |
| 21 | Alex Bregman | 0.367 | |
| Single Season - Worst On-Base | |||||
| Rk | Player Name | Totals | Year | ||
| 1 | Jeff Baker | 0.228 | 2016 | ||
| 2 | Miguel Montero | 0.244 | 2016 | ||
| 3 | Pedro Alvarez | 0.255 | 2016 | ||
| 4 | Starlin Castro | 0.260 | 2016 | ||
| 5 | Alex Rios | 0.281 | 2014 | ||
| 6 | Michael Harris II | 0.281 | 2025 | ||
| 7 | Nico Hoerner | 0.283 | 2024 | ||
| 8 | J.T. Realmuto | 0.284 | 2022 | ||
| 9 | Ryan Zimmerman | 0.286 | 2014 | ||
| 10 | Mike Yastrzemski | 0.286 | 2023 | ||
| 11 | Oswaldo Arcia | 0.287 | 2015 | ||
| 12 | Nico Hoerner | 0.287 | 2025 | ||
| 13 | Chris Davis | 0.288 | 2015 | ||
| 14 | Max Schrock | 0.290 | 2022 | ||
| 15 | Brett Lawrie | 0.292 | 2014 | ||
| 16 | Kyle Lewis | 0.292 | 2019 | ||
| 17 | Wilmer Flores | 0.292 | 2021 | ||
| 18 | Michael Harris II | 0.292 | 2024 | ||
| 19 | Daniel Descalso | 0.293 | 2015 | ||
| 20 | Jazz Chisholm | 0.293 | 2022 | ||
| 21 | Brandon Barnes | 0.301 | 2016 | ||
| 22 | Ketel Marte | 0.301 | 2021 | ||
| 23 | Will Wagner | 0.304 | 2025 | ||
| 24 | Robinson Cano | 0.305 | 2021 | ||
| 25 | Starlin Castro | 0.306 | 2015 | ||