| Career - Worst On-Base | |||
| Rk | Player Name | Totals | |
| 1 | Jorge Cantu | 0.274 | |
| 2 | Jordy Mercer | 0.288 | |
| 3 | Joe Randa | 0.290 | |
| 4 | Starlin Castro | 0.298 | |
| 5 | Nick Ahmed | 0.298 | |
| 6 | Daniel Murphy | 0.305 | |
| 7 | Jerry Hairston | 0.306 | |
| 8 | Lastings Milledge | 0.307 | |
| 9 | Mike Cameron | 0.309 | |
| 10 | Jose Abreu | 0.310 | |
| 11 | Jack Wilson | 0.313 | |
| 12 | Dmitri Young | 0.315 | |
| 13 | Willy Adames | 0.315 | |
| 14 | Jimmy Rollins | 0.316 | |
| 15 | Alejandro De Aza | 0.316 | |
| 16 | Kyle Seager | 0.317 | |
| 17 | Asdrubal Cabrera | 0.317 | |
| 18 | Kole Calhoun | 0.317 | |
| 19 | Yadier Molina | 0.319 | |
| 20 | Yasiel Puig | 0.319 | |
| 21 | Javy Lopez | 0.323 | |
| 22 | Justin Morneau | 0.325 | |
| 23 | Josh Phelps | 0.326 | |
| 24 | Jeff Kent | 0.327 | |
| 25 | Zack Cozart | 0.329 | |
| Single Season - Worst On-Base | |||||
| Rk | Player Name | Totals | Year | ||
| 1 | Jorge Cantu | 0.230 | 2011 | ||
| 2 | Jordy Mercer | 0.259 | 2015 | ||
| 3 | Shea Hillenbrand | 0.260 | 2004 | ||
| 4 | Corey Patterson | 0.261 | 2005 | ||
| 5 | Jayson Werth | 0.261 | 2010 | ||
| 6 | Dmitri Young | 0.266 | 2006 | ||
| 7 | Colby Rasmus | 0.269 | 2015 | ||
| 8 | Starlin Castro | 0.275 | 2013 | ||
| 9 | Yadier Molina | 0.279 | 2013 | ||
| 10 | Jose Abreu | 0.281 | 2019 | ||
| 11 | Jeff Kent | 0.284 | 2009 | ||
| 12 | Daniel Murphy | 0.284 | 2013 | ||
| 13 | Randal Grichuk | 0.284 | 2021 | ||
| 14 | Joe Randa | 0.285 | 2006 | ||
| 15 | Jimmy Rollins | 0.286 | 2010 | ||
| 16 | Zack Cozart | 0.290 | 2017 | ||
| 17 | Ichiro Suzuki | 0.291 | 2006 | ||
| 18 | Yasiel Puig | 0.292 | 2016 | ||
| 19 | Carlos Beltran | 0.293 | 2006 | ||
| 20 | Kyle Seager | 0.293 | 2014 | ||
| 21 | Dustin Ackley | 0.293 | 2015 | ||
| 22 | Kyle Seager | 0.293 | 2015 | ||
| 23 | Rickie Weeks | 0.294 | 2015 | ||
| 24 | Jose Abreu | 0.295 | 2020 | ||
| 25 | Torii Hunter | 0.301 | 2015 | ||