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| League History Index | Players | Teams | Managers | Leagues | Leaderboards | Awards | Accomplishments |
| Rank | Player | EFF | YEAR | Open Career Leaderboard |
|---|---|---|---|---|
| 1 | Joey Bart# | 1.252 | 2020 | |
| 2 | Yasmani Grandal# | 1.127 | 2020 | |
| 2 | Willians Astudillo# | 1.127 | 2020 | |
| 2 | Tom Murphy# | 1.127 | 2020 | |
| 2 | Travis d'Arnaud# | 1.127 | 2020 | |
| 2 | Roberto Perez# | 1.127 | 2020 | |
| 2 | Tucker Barnhart# | 1.127 | 2020 | |
| 8 | Christian Vazquez# | 1.085 | 2020 | |
| 9 | Francisco Mejia# | 1.046 | 2020 | |
| 10 | Reese McGuire# | 1.040 | 2020 | |
| 10 | Carson Kelly# | 1.040 | 2020 | |
| 10 | Keibert Ruiz# | 1.040 | 2020 | |
| 13 | Kyle Higashioka# | 1.037 | 2020 | |
| 14 | Yadier Molina# | 1.033 | 2020 | |
| 15 | Jorge Alfaro# | 1.014 | 2020 | |
| 16 | Mitch Garver# | 1.006 | 2020 | |
| 17 | Gary Sanchez# | 0.986 | 2020 | |
| 18 | J.T. Realmuto# | 0.966 | 2020 | |
| 18 | Willson Contreras# | 0.966 | 2020 | |
| 20 | Omar Narvaez# | 0.958 | 2020 | |
| 21 | Wilson Ramos# | 0.939 | 2020 | |
| 22 | Sean Murphy# | 0.928 | 2020 | |
| 23 | Tyler Flowers# | 0.922 | 2020 | |
| 24 | Will Smith# | 0.901 | 2020 | |
| 25 | Austin Hedges# | 0.780 | 2020 |
