| Career - Worst On-Base | |||
| Rk | Player Name | Totals | |
| 1 | Chris Owings | 0.257 | |
| 2 | Paul DeJong | 0.283 | |
| 3 | Chris Carter | 0.286 | |
| 4 | Matt Kemp | 0.288 | |
| 5 | Alberto Callaspo | 0.296 | |
| 6 | Michael Bourn | 0.305 | |
| 7 | Josh Reddick | 0.310 | |
| 8 | Alex Gordon | 0.311 | |
| 9 | Francisco Lindor | 0.311 | |
| 10 | Asdrubal Cabrera | 0.312 | |
| 11 | Trey Mancini | 0.313 | |
| 12 | Corey Dickerson | 0.317 | |
| 13 | Pete Alonso | 0.318 | |
| 14 | Max Kepler | 0.326 | |
| 15 | Jake Cronenworth | 0.335 | |
| 16 | Whit Merrifield | 0.340 | |
| Single Season - Worst On-Base | |||||
| Rk | Player Name | Totals | Year | ||
| 1 | Robinson Chirinos | 0.206 | 2016 | ||
| 2 | Harrison Bader | 0.244 | 2019 | ||
| 3 | Tyrone Taylor | 0.250 | 2022 | ||
| 4 | Randal Grichuk | 0.253 | 2018 | ||
| 5 | Alberto Callaspo | 0.256 | 2015 | ||
| 6 | Victor Robles | 0.256 | 2020 | ||
| 7 | Chris Carter | 0.260 | 2015 | ||
| 8 | Paul DeJong | 0.261 | 2019 | ||
| 9 | Asdrubal Cabrera | 0.266 | 2014 | ||
| 10 | Pete Alonso | 0.268 | 2021 | ||
| 11 | Chris Owings | 0.270 | 2015 | ||
| 12 | Austin Jackson | 0.271 | 2016 | ||
| 13 | Alex Gordon | 0.274 | 2017 | ||
| 14 | Todd Frazier | 0.275 | 2014 | ||
| 15 | Alex Gordon | 0.275 | 2019 | ||
| 16 | Francisco Lindor | 0.275 | 2021 | ||
| 17 | Matt Kemp | 0.277 | 2015 | ||
| 18 | Paul DeJong | 0.279 | 2020 | ||
| 19 | Conor Gillaspie | 0.281 | 2017 | ||
| 20 | Chris Carter | 0.284 | 2017 | ||
| 21 | Hanser Alberto | 0.284 | 2021 | ||
| 22 | Matt Kemp | 0.285 | 2016 | ||
| 23 | Lucas Duda | 0.286 | 2018 | ||
| 24 | Asdrubal Cabrera | 0.287 | 2015 | ||
| 25 | Miguel Andujar | 0.293 | 2019 | ||