| Player | Position | Team | Years | Amount | Option |
|---|---|---|---|---|---|
| Fernando Abad | RP | Phillies | 1 | Minor | |
| Matt Albers | RP | Brewers | 2 | $5MM | |
| Al Alburquerque | RP | Blue Jays | 1 | Minor | |
| Dario Alvarez | RP | Cubs | 1 | $545K | |
| John Axford | RP | Blue Jays | 1 | Minor | |
| Tony Barnette | RP | Rangers | 1 | $1.5MM | |
| Antonio Bastardo | RP | Diamondbacks | 1 | Minor | |
| Matt Belisle | RP | Indians | 1 | Minor | |
| Joaquin Benoit | RP | Nationals | 1 | $1MM | |
| Austin Bibens-Dirkx | RP / SP | Rangers | 1 | Minor | |
| Mike Bolsinger | RP / SP | Japan | |||
| Lisalverto Bonilla | RP / SP | Indians | 1 | Minor | |
| Blaine Boyer | RP | Royals | 1 | Minor | |
| Michael Brady | RP | Brewers | 1 | Minor | |
| Craig Breslow | RP | Blue Jays | 1 | Minor | |
| Colten Brewer | RP | Padres | 1 | $545K | |
| Trevor Cahill | RP / SP | Athletics | 1 | $1.5MM | |
| Simon Castro | RP | Athletics | 1 | Minor | |
| Xavier Cedeno | RP | White Sox | 1 | Minor | |
| Jesse Chavez | RP / SP | Rangers | 1 | $1MM | |
| Steve Cishek | RP | Cubs | 2 | $13MM | |
| Tyler Clippard | RP | Blue Jays | 1 | Minor | |
| Wade Davis | RP | Rockies | 3 | $52MM | Vesting |
| Jorge De La Rosa | RP | Diamondbacks | 1 | Minor | |
| Jumbo Diaz | RP | Marlins | 1 | Minor | |
| Brian Duensing | RP | Cubs | 2 | $7MM | |
| Zach Duke | RP | Twins | 1 | $2.15MM | |
| Josh Edgin | RP | Orioles | 1 | Minor | |
| Paolo Espino | RP / SP | Rangers | 1 | Minor | |
| Neftali Feliz | RP | Diamondbacks | 1 | Minor | |
| Dillon Gee | RP / SP | Japan | 1 | Unknown | |
| Erik Goeddel | RP | Rangers | 1 | Minor | |
| Jeanmar Gomez | RP | White Sox | 1 | Minor | |
| Luke Gregerson | RP | Cardinals | 2 | $11MM | Vesting |
| Deolis Guerra | RP | Rangers | 1 | Minor | |
| Javy Guerra | RP | Marlins | 1 | Minor | |
| David Hernandez | RP | Reds | 2 | $5MM | |
| Yoshihisa Hirano | RP | Diamondbacks | 2 | $6MM | |
| Greg Holland | RP | Cardinals | 1 | $14MM | |
| David Holmberg | RP / SP | Orioles | 1 | Minor | |
| J.J. Hoover | RP | Brewers | 1 | Minor | |
| Jared Hughes | RP | Reds | 2 | $4.5MM | Club |
| Tommy Hunter | RP | Phillies | 2 | $18MM | |
| Edwin Jackson | RP / SP | Nationals | 1 | Minor | |
| Brandon Kintzler | RP | Nationals | 2 | $10MM | |
| Tom Koehler | RP / SP | Dodgers | 1 | $2MM | |
| Ian Krol | RP | Angels | 1 | Minor | |
| Casey Lawrence | RP / SP | Mariners | 1 | Minor | |
| Wade LeBlanc | RP / SP | Yankees | 1 | Minor | |
| Tim Lincecum | RP / SP | Rangers | 1 | $1MM | |
| Francisco Liriano | RP / SP | Tigers | 1 | $4MM | |
| Boone Logan | RP | Brewers | 1 | $2.5MM | Club |
| Jordan Lyles | RP / SP | Padres | 1 | $1MM | Club |
| Kazuhisa Makita | RP | Padres | 2 | $3.8MM | |
| Chris Martin | RP | Rangers | 2 | $4MM | |
| T.J. McFarland | RP | Diamondbacks | 1 | $850K | |
| Jake McGee | RP | Rockies | 3 | $27MM | Vesting |
| Dustin McGowan | RP | Rays | 1 | Minor | |
| Tommy Milone | RP / SP | Nationals | 1 | Minor | |
| Mike Minor | RP / SP | Rangers | 3 | $28MM | |
| Brandon Morrow | RP | Cubs | 2 | $21MM | Vesting |
| Jason Motte | RP | Cardinals | 1 | Minor | |
| Peter Moylan | RP | Braves | 1 | $575K | |
| Pat Neshek | RP | Phillies | 2 | $16.25MM | Club |
| Juan Nicasio | RP | Mariners | 2 | $17MM | |
| Bud Norris | RP / SP | Cardinals | 1 | $3MM | |
| Vidal Nuno | RP | Rays | 1 | Minor | |
| Seung-hwan Oh | RP | Blue Jays | 1 | $2MM | Vesting |
| Mike Pelfrey | RP / SP | Retirement | |||
| Oliver Perez | RP | Reds | 1 | Minor | |
| Glen Perkins | RP | Retirement | |||
| Yusmeiro Petit | RP | Athletics | 2 | $10MM | Club |
| Jake Petricka | RP | Blue Jays | 1 | Minor | |
| Tyler Pill | RP / SP | Diamondbacks | 1 | Minor | |
| Kevin Quackenbush | RP | Reds | 1 | Minor | |
| Neil Ramirez | RP | Indians | 1 | Minor | |
| Addison Reed | RP | Twins | 2 | $16.75MM | |
| Fernando Rodney | RP | Twins | 1 | $4.5MM | Club |
| Francisco Rodriguez | RP | Phillies | 1 | Minor | |
| Joely Rodriguez | RP | Orioles | 1 | Minor | |
| Sergio Romo | RP | Rays | 1 | $2.5MM | |
| Bruce Rondon | RP | White Sox | 1 | Minor | |
| Hector Rondon | RP | Astros | 2 | $8.5MM | |
| Robbie Ross | RP | White Sox | 1 | Minor | |
| Fernando Salas | RP | Diamondbacks | 1 | Minor | |
| Anibal Sanchez | RP / SP | Twins | 1 | $2.5MM | |
| Rob Scahill | RP | White Sox | 1 | Minor | |
| Bryan Shaw | RP | Rockies | 3 | $27MM | Vesting |
| Kevin Siegrist | RP | Pirates | 1 | Minor | |
| Shae Simmons | RP | Cubs | 1 | $750K | |
| Josh Smith | RP | Mariners | 1 | Minor | |
| Joe Smith | RP | Astros | 2 | $15MM | |
| Craig Stammen | RP | Padres | 2 | $4.5MM | |
| Anthony Swarzak | RP | Mets | 2 | $14MM | |
| Carlos Torres | RP | Indians | 1 | Minor | |
| Koji Uehara | RP | Japan | |||
| Tony Watson | RP | Giants | 3 | $8.5MM | |
| Tom Wilhelmsen | RP | Padres | 1 | Minor | |
| Travis Wood | RP / SP | Tigers | 1 | Minor | |
| Vance Worley | RP | Reds | 1 | Minor | |
| Michael Ynoa | RP | White Sox | 1 | Minor | |
| Chris Young | RP / SP | Padres | 1 | Minor |
This free agent tracker covers the time period beginning the day after the World Series ends in 2017, up until the day before Opening Day 2018.
