An impressive collection of talent has hit the open market, and players are now eligible to sign with any team. Here is a division-by-division breakdown of the key free agents for all 30 Major League clubs.
NATIONAL LEAGUE EAST
Key free agents: RHP Brad Brach, 1B Lucas Duda, 3B Ryan Flaherty, OF Nick Markakis, C Rene Rivera, RHP Peter Moylan
Markakis was a valuable member of a youthful Braves club in 2018, providing veteran leadership and making the All-Star team for the first time in his career. Atlanta has a stellar farm system that is loaded with pitching prospects, but without an obvious replacement for Markakis in right field, the door remains open for the soon-to-be 35-year-old to return. Kurt Suzuki formed a productive catching tandem with Tyler Flowers across 2017-18, but the 35-year-old signed a two-year deal with the Nationals.
Key free agents: INF/OF Derek Dietrich
The Marlins' roster is replete with players who are at the early stages of their big league careers, putting them years away from free agency. After trading multiple big-name players last offseason, Miami will likely now look to deal veterans Starlin Castro and Martin Prado, as they are owed nearly $27 million combined in 2019. Meanwhile, Dietrich elected free agency after being designated for assignment and clearing waivers.
New York Mets
Key free agents: LHP Jerry Blevins, OF Austin Jackson, C Devin Mesoraco, RHP AJ Ramos, INF Jose Reyes
With Travis d'Arnaud, T.J. Rivera and Juan Lagares returning from injuries, the Mets have obvious replacements for Mesoraco, Reyes and Jackson next year. Blevins is more likely to be back than Ramos, whose recovery from right shoulder surgery is expected to extend into next June and possibly longer.
Key free agents: 3B/OF Jose Bautista, INF Asdrubal Cabrera, LHP Aaron Loup
All four players on Philadelphia's list were acquired late in the 2018 campaign as the Phillies made a playoff push that ultimately fell short. Wilson Ramos signed with the division-rival Mets, leaving Jorge Alfaro as the likely starter behind the plate for the Phils in 2019. Cabrera could be a fallback option if the Phillies are unable to land Manny Machado in free agency.
Key free agents: OF Bryce Harper, RHP Jeremy Hellickson, RHP Greg Holland, 1B Mark Reynolds, C Matt Wieters, LHP Tim Collins, RHP Joaquin Benoit
Harper is one of the top free agents on the market, and the Nats are making a major push to keep him in Washington. The club might also be interested in bringing back Holland and Hellickson, but the two righties are sure to draw interest from other clubs after boosting their value with the Nats. Washington traded for Yan Gomes and signed Kurt Suzuki this offseason, leaving Wieters looking for a new home. Left-hander Sean Doolittle will be back, as the Nats exercised his option for 2019.
Key free agents: LHP Jorge De La Rosa, LHP Justin Wilson, C Bobby Wilson
The Cubs exercised their $20 million club option for Cole Hamels, who was acquired from the Rangers at the non-waiver Trade Deadline, picked up Pedro Strop's $6.25 million option and tendered contracts to seven arbitration-eligible players, so they didn't have any major free-agent departures.
Key free agents: None
Outside of Matt Harvey, who joined the Angels on a one-year deal, the Reds didn't have any key departures or options to worry about this winter, though Scooter Gennett is due for free agency following the 2019 season and has been mentioned in trade rumors.
Key free agents: LHP Xavier Cedeno, LHP Dan Jennings, LHP Gio Gonzalez, OF Curtis Granderson, LHP Wade Miley, 3B Mike Moustakas
The Brewers have most of their pitching depth locked up, with Gonzalez, an in-season acquisition, and Miley, who was initially signed to a Minor League contract before last season, the only two starters hitting free agency. Moustakas and Joakim Soria declined player options, making them free agents, and Soria signed with the A's. The club picked up Jeremy Jeffress' $3.175 million team option.
Key free agents: INF/OF Josh Harrison
The Pirates appear to be mostly set with their pitching staff but will be looking for a bat in the offseason -- likely at shortstop, after Jordy Mercer signed with the Tigers. Even if they don't make a Manny Machado-sized splash at that position, the market is deep this offseason, with Jose Iglesias, Freddy Galvis and Adeiny Hechavarria among the names in play. The Pirates opened up some payroll flexibility and a roster spot by declining Harrison's $10.5 million option.
St. Louis Cardinals
Key free agents: RHP Bud Norris
Adam Wainwright agreed to a one-year deal to return for his 15th season with the Cardinals. Improving the bullpen to build around Jordan Hicks was a priority for St. Louis, especially with the departure of Norris, who provided stability at closer for much of the season. As a result, the Cards signed Andrew Miller in December.
Key free agents: RHP Clay Buchholz, RHP Randall Delgado, LHP Jake Diekman, OF A.J. Pollock, C Chris Stewart, RHP Brad Boxberger
The D-backs made one-year, $17.9 million qualifying offers to Patrick Corbin and Pollock, both of which were rejected, and Corbin went on to sign with the Nationals. Pollock remains unsigned but is not expected back with Arizona.
Key free agents: C Drew Butera, OF Carlos Gonzalez, OF Matt Holliday, OF Gerardo Parra
With DJ LeMahieu joining the Yankees and new acquisition Daniel Murphy expected to move to first base, the Rockies may be set to turn the reins at second base over to one of their middle-infield prospects, Garrett Hampson and Brendan Rodgers. They also face decisions in the outfield and in the bullpen, with a number of key players entering free agency. That includes Parra, whose $12 million option was declined, and Adam Ottavino, who joined LeMahieu by signing with the Yanks.
Los Angeles Dodgers
Key free agents: RHP John Axford, RHP Daniel Hudson, SS Manny Machado, RHP Ryan Madson
Clayton Kershaw, who had an opt-out clause that would have voided the final two years of his deal, signed a three-year, $93 million contract to stay with the Dodgers, but Machado is not expected back. Meanwhile, Los Angeles made qualifying offers to Yasmani Grandal (who signed a one-year deal with the Brewers) and the oft-injured Hyun-Jin Ryu, with the latter accepting.
San Diego Padres
Key free agents: C A.J. Ellis, SS Freddy Galvis
The Padres' 2018 roster will remain mostly intact with only Galvis and Ellis entering free agency. San Diego may let both walk, with young catchers Austin Hedges and Francisco Mejia in the mix, top prospect Fernando Tatis Jr. (San Diego's No. 1 prospect, per MLB Pipeline) nearing big league readiness and veteran second baseman Ian Kinsler joining on a two-year deal.
San Francisco Giants
Key free agents: C Nick Hundley, OF Hunter Pence, RHP Hunter Strickland
San Francisco exercised its options on Madison Bumgarner and Pablo Sandoval, bringing them back for 2019, and re-signed Derek Holland, who enjoyed a bounceback campaign and anchored an injury-riddled Giants rotation in 2018. The team could look to re-sign Hundley, who capably backed up Buster Posey, but they will likely part ways with Pence.
AMERICAN LEAGUE EAST
Key free agents: OF Adam Jones, C Caleb Joseph
The O's traded nearly every player on an expiring contract, including Manny Machado, Zach Britton and Brad Brach, during their 2018 roster purge. Baltimore would have dealt Jones as well, but he was unwilling to waive his 10-and-5 rights. Jones may be interested in returning, but he would likely need to accept a reduced role as the Orioles look to the future. The O's non-tendered Beckham and Joseph in November.
Boston Red Sox
Key free agents: RHP Craig Kimbrel, 2B Brandon Phillips, LHP Drew Pomeranz
The Red Sox have retained most of their roster after winning the World Series in 2018, re-signing postseason heroes Nathan Eovaldi and Steve Pearce and picking up Chris Sale's $15 million option for '19. Eduardo Nunez exercised his $5 million player option for '19, and David Price decided not to opt out of the remaining four years and $127 million on his contract. Kimbrel could end up being the only key player Boston loses, as he rejected the club's qualifying offer.
New York Yankees
Key free agents: SS Adeiny Hechavarria, 2B/OF Neil Walker
Pitching has been the main focus for the Yankees this offseason. They re-signed CC Sabathia to a one-year deal and reliever Zach Britton to a three-year pact, and traded for James Paxton. Meanwhile, David Robertson moved onto the Phillies. The club declined a $12.5 million club option for 35-year-old outfielder Brett Gardner, New York's longest-tenured player, but re-signed him to a one-year deal worth $7.5 million.
Tampa Bay Rays
Key free agents: OF Carlos Gomez, RHP Sergio Romo
Romo was an integral member of the Rays' pitching staff for much of the 2018 season, racking up 25 saves and making five appearances as an "opener." However, he recorded a 10.00 ERA in September and will be 36 years old on Opening Day in '19. The cost-conscious Rays may opt to move on and give an opportunity to a younger alternative. As for Gomez, the veteran outfielder is unlikely to be back after posting a .634 OPS over 118 games in 2018.
Toronto Blue Jays
Key free agents: RHP Tyler Clippard, RHP Marco Estrada, INF Yangervis Solarte
Much like Baltimore, Toronto dealt many impending free agents during the 2018 season, including Josh Donaldson, J.A. Happ, Steve Pearce, Curtis Granderson and John Axford. The Jays picked up Justin Smoak's reasonable $8 million club option, but are unlikely to bring back Estrada after adding Matt Shoemaker and Clayton Richard to the rotation.
Chicago White Sox
Key free agents: 1B/DH Matt Davidson, OF Avisail Garcia, RHP Miguel Gonzalez, RHP James Shields
The White Sox are close to emerging from their rebuild, and the club could look for more pitching help this offseason, since Michael Kopech is sidelined for 2019 after undergoing Tommy John surgery. Chicago picked up Nate Jones' $4.65 million option, but declined Shields' option for $16 million, opting instead for a $2 million buyout, and decided not to tender contracts to Davidson or Garcia.
Key free agents: OF Melky Cabrera, OF Brandon Guyer, LHP Oliver Perez, INF Adam Rosales, RHP Josh Tomlin
The Indians have some security in the bullpen with midseason acquisitions Brad Hand and Adam Cimber both controllable for several more seasons, but bolstering the relief corps is a priority for Cleveland after Andrew Miller signed with the Cardinals and Cody Allen joined the Angels. Outfield is also an area of need, especially with Michael Brantley joining the Astros and Lonnie Chisenhall signing with the Pirates. The Tribe picked up Carlos Carrasco's $9.75 million club option for '19 but opted to buy out Guyer for $250,000 instead of exercising his $3 million option. Third baseman Josh Donaldson's stay in Cleveland was brief, as he inked a one-year, $23 million deal with the Braves.
Key free agents: SS Jose Iglesias, LHP Francisco Liriano, C Jarrod Saltalamacchia
Iglesias, Liriano and the retiring Victor Martinez are the key departures for the rebuilding Tigers, who signed Jordy Mercer to replace Iglesias and added Matt Moore and Tyson Ross to their rotation.
Kansas City Royals
Key free agents: SS Alcides Escobar, RHP Jason Hammel
After trading Jon Jay, Lucas Duda, Kelvin Herrera and Mike Moustakas last season, the Royals figure to let Escobar walk, as Adalberto Mondesi is now their starting shortstop. The Royals will pay a $2 million buyout to get Hammel off the books instead of exercising his $12 million mutual option for 2019, but they'll bring back Wily Peralta, who emerged as their closer last season, on arestructured contract.
Key free agents: RHP Matt Belisle, 2B Logan Forsythe, 1B/DH Logan Morrison, RHP Ervin Santana, OF Robbie Grossman
With Joe Mauer retiring and the Twins declining to pick up Morrison's $8 million option for 2019, Minnesota had a need at first base and designated hitter, leading to the additions of C.J. Cron and Nelson Cruz. Minnesota also signed Jonathan Schoop to replace the departed Brian Dozier (traded to the Dodgers in July) and Forsythe. Santana's $14 million option was declined after the righty missed nearly all of '18 with finger issues.
Los Angeles Angels
Key free agents: RHP Jim Johnson, RHP Junichi Tazawa, OF Chris Young, OF Eric Young Jr., RHP Blake Wood
The Angels will retain much of their core. Johnson will likely draw interest on the open market for clubs in need of dependable bullpen arms. Young suffered a season-ending injury (labral tears in both hips) but is expected to be ready for Spring Training.
Key free agents: DH Evan Gattis, UTIL Marwin Gonzalez, LHP Dallas Keuchel, C Martin Maldonado, LHP Tony Sipp
Keuchel figures to be one of the most sought-after starting pitchers on the market this winter. The 2015 AL Cy Young Award winner has spent his entire career with the Astros, but could anchor another team's staff in 2019. Brian McCann returned to Atlanta on a one-year deal, and Maldonado is not expected back after the team signed Robinson Chirinos.
Key free agents: LHP Brett Anderson, RHP Edwin Jackson, OF Matt Joyce, RHP Shawn Kelley
Jed Lowrie, who signed a two-year deal with the Mets, was the biggest name among A's free agents, but Oakland let the veteran walk after acquiring Jurickson Profar to handle second base. Joyce is likely the odd man out in a crowded A's outfield. The A's also lost Jeurys Familia to the Mets and Trevor Cahill to the Angels but added Joakim Soria and re-signed Mike Fiers.
Key free agents: 2B Gordon Beckham, LHP Zach Duke, OF Cameron Maybin, UTL Andrew Romine, OF Denard Span, RHP Adam Warren
Nelson Cruz has moved on to the Twins, and the rebuilding Mariners are unlikely to re-sign any of the other players on this list.
Key free agents: RHP Bartolo Colon, RHP Doug Fister, RHP Yovani Gallardo, LHP Martin Perez, Tony Barnette
Adrian Beltre retired, and Texas declined its options on Fister, Perez and Matt Moore, making them free agents. Colon and Gallardo aren't expected to return after the Rangers signed Lance Lynn, Shelby Miller and Edinson Volquez and traded for Drew Smyly.
Thomas Harrigan is a reporter and researcher for MLB.com.
Do-Hyoung Park is a reporter for MLB.com based in the Bay Area. Follow him on Twitter at @dohyoungpark.
Chad Thornburg is a reporter for MLB.com based in Los Angeles.