| Player | Position | Team | Years | Amount | Option |
|---|---|---|---|---|---|
| Drew Butera | C | Phillies | 1 | Minor | |
| Robinson Chirinos | C | Astros | 1 | $5.75MM | |
| A.J. Ellis | C | Retirement | |||
| Chris Gimenez | C | Retirement | |||
| Yasmani Grandal | C | Brewers | 1 | $18.25MM | Mutual |
| Chris Herrmann | C | Athletics | 1 | $1MM | |
| Nick Hundley | C | Athletics | 1 | Minor | |
| Caleb Joseph | C | Diamondbacks | 1 | $1.1MM | |
| Jose Lobaton | C | Mariners | 1 | Minor | |
| Jonathan Lucroy | C | Angels | 1 | $3.35MM | |
| Martin Maldonado | C | Royals | 1 | $2.5MM | |
| Jeff Mathis | C | Rangers | 2 | $6.25MM | |
| James McCann | C | White Sox | 1 | $2.5MM | |
| Brian McCann | C | Braves | 1 | $2MM | |
| Devin Mesoraco | C | Mets | 1 | Minor | |
| Francisco Pena | C | Cardinals | 1 | Minor | |
| Carlos Perez | C | Orioles | 1 | Minor | |
| Wilson Ramos | C | Mets | 2 | $19MM | Club |
| Rene Rivera | C | Giants | 1 | Minor | |
| Chris Stewart | C | Padres | 1 | Minor | |
| Jesus Sucre | C | Orioles | 1 | Minor | |
| Kurt Suzuki | C | Nationals | 2 | $10MM | |
| Stephen Vogt | C | Giants | 1 | Minor | |
| Matt Wieters | C | Cardinals | 1 | Minor | |
| Bobby Wilson | C | Tigers | 1 | Minor |
This free agent tracker covers the time period beginning the day after the World Series ends in 2018, up until the day before Opening Day 2019.
