| Player | Position | Team | Years | Amount | Option |
|---|---|---|---|---|---|
| Fernando Abad | RP | Nationals | 1 | Minor | |
| Luis Avilan | RP | Yankees | 1 | Minor | |
| Manny Banuelos | RP / SP | Mariners | 1 | Minor | |
| Jesse Biddle | RP | Reds | 1 | Minor | |
| Jerry Blevins | RP | Giants | 1 | Minor | |
| Buddy Boshers | RP | ||||
| Ryan Buchter | RP | Angels | 1 | Minor | |
| Tony Cingrani | RP | ||||
| Alex Claudio | RP | Brewers | 1 | $1.75MM | |
| Danny Coulombe | RP | Twins | 1 | Minor | |
| Ross Detwiler | RP / SP | White Sox | 1 | Minor | |
| Jake Diekman | RP | Athletics | 2 | $7.5MM | Club |
| Zach Duke | RP | ||||
| Mike Dunn | RP | Retirement | |||
| Robbie Erlin | RP / SP | Pirates | 1 | Minor | |
| Brian Flynn | RP | Rangers | 1 | Minor | |
| Matt Grace | RP | Diamondbacks | 1 | Minor | |
| Blaine Hardy | RP | Twins | 1 | Minor | |
| Derek Holland | RP / SP | Pirates | 1 | Minor | |
| Wade LeBlanc | RP | Orioles | 1 | Minor | |
| Francisco Liriano | RP | Phillies | 1 | Minor | |
| Aaron Loup | RP | Rays | 1 | Minor | |
| Tyler Lyons | RP | Yankees | 1 | Minor | |
| Tommy Milone | RP | Orioles | 1 | Minor | |
| Tyler Olson | RP | Cubs | 1 | Minor | |
| Josh Osich | RP | Red Sox | 1 | $850K | |
| Drew Pomeranz | RP / SP | Padres | 4 | $34MM | |
| Joely Rodriguez | RP | Rangers | 2 | $5.5MM | Club |
| Zac Rosscup | RP | Rockies | 1 | Minor | |
| Chris Rusin | RP | Braves | 1 | Minor | |
| Marc Rzepczynski | RP | Blue Jays | 1 | Minor | |
| Hector Santiago | RP | Tigers | 1 | Minor | |
| Chasen Shreve | RP | Mets | 1 | Minor | |
| Tony Sipp | RP | ||||
| Will Smith | RP | Braves | 3 | $40MM | Club |
| Daniel Stumpf | RP | ||||
| Jonny Venters | RP | ||||
| Wei-Chung Wang | RP |
This free agent tracker covers the time period beginning the day after the World Series ends in 2019, up until the day before Opening Day 2020.
