| Career - Worst On-Base | |||
| Rk | Player Name | Totals | |
| 1 | Logan Morrison | 0.284 | |
| 2 | Mark Trumbo | 0.285 | |
| 3 | Chuck Carr | 0.289 | |
| 4 | Brandon Crawford | 0.290 | |
| 5 | Kevin Pillar | 0.291 | |
| 6 | Brent Mayne | 0.296 | |
| 7 | Carlos Beltran | 0.298 | |
| 8 | Lourdes Gurriel | 0.298 | |
| 9 | Wilin Rosario | 0.299 | |
| 10 | Evan Longoria | 0.299 | |
| 11 | Rich Aurilia | 0.305 | |
| 12 | Reed Johnson | 0.306 | |
| 13 | Marco Scutaro | 0.306 | |
| 14 | Jim Gantner | 0.308 | |
| 15 | Brian McCann | 0.309 | |
| 16 | Chris Taylor | 0.310 | |
| 17 | David Eckstein | 0.311 | |
| 18 | Whit Merrifield | 0.311 | |
| 19 | Aaron Hill | 0.312 | |
| 20 | Damian Miller | 0.313 | |
| 21 | Brad Miller | 0.315 | |
| 22 | Roberto Kelly | 0.316 | |
| 23 | Jacob Stallings | 0.318 | |
| 24 | Thomas Howard | 0.320 | |
| 25 | Brock Holt | 0.321 | |
| Single Season - Worst On-Base | |||||
| Rk | Player Name | Totals | Year | ||
| 1 | Seth Smith | 0.124 | 2018 | ||
| 2 | Chuck Knoblauch | 0.223 | 1993 | ||
| 3 | Carlos Beltran | 0.229 | 2018 | ||
| 4 | Chris Widger | 0.233 | 1999 | ||
| 5 | Andre Dawson | 0.244 | 1993 | ||
| 6 | Mike Devereaux | 0.252 | 1993 | ||
| 7 | Matt Luke | 0.263 | 1999 | ||
| 8 | Lourdes Gurriel | 0.263 | 2024 | ||
| 9 | Albert Belle | 0.266 | 1992 | ||
| 10 | Joe Oliver | 0.270 | 1993 | ||
| 11 | Brandon Crawford | 0.270 | 2015 | ||
| 12 | Mark Trumbo | 0.273 | 2014 | ||
| 13 | Garret Anderson | 0.275 | 2006 | ||
| 14 | Larry Walker | 0.276 | 1997 | ||
| 15 | Roberto Kelly | 0.277 | 1991 | ||
| 16 | Troy Neel | 0.282 | 1994 | ||
| 17 | Rich Aurilia | 0.283 | 2000 | ||
| 18 | Juan Lagares | 0.283 | 2015 | ||
| 19 | Kevin Pillar | 0.283 | 2021 | ||
| 20 | Aaron Hill | 0.284 | 2012 | ||
| 21 | Albert Belle | 0.285 | 1993 | ||
| 22 | Josh Harrison | 0.288 | 2023 | ||
| 23 | Josh Reddick | 0.288 | 2022 | ||
| 24 | Troy Tulowitzki | 0.290 | 2008 | ||
| 25 | Kevin Pillar | 0.291 | 2017 | ||