Oct 29, 2021

• The New York Mets sent INF/OF José Martínez, RHP Corey Oswalt, INF José Peraza and RHP Robert Stock outright to Triple-A Syracuse. All four players declined the assignment and elected free agency.

Oct 28, 2021

• The Arizona Diamondbacks named Joe Mather hitting coach.
• The Miami Marlins agreed to terms with INF Miguel Rojas on a two-year contract.

Oct 27, 2021

• The San Diego Padres named Ruben Niebla pitching coach.
• The Atlanta Braves released RHP Edgar Santana.
• The Arizona Diamondbacks claimed RHP Edwin Uceta from Los Angeles Dodgers.

Oct 26, 2021

• The New York Mets announced they will exercise their option on pitching coach Jeremy Hefner for the 2022 season.

Oct 25, 2021

• The Baltimore Orioles announced RHPs Thomas Eshelman, Konner Wade, INF Pat Valaika and C Austin Wynns have cleared outright waivers and elected free agency.
• The St. Louis Cardinals named Oliver Marmol team manager.
• The Philadelphia Phillies named Bobby Dickerson infield coach.
• The Milwaukee Brewers announced the retirement of coach Ed Sedar.
• The Chicago Cubs named Ehsan Bokhari assistant general manager.

Oct 22, 2021

• The Atlanta Braves claimed RHP Ljay Newsome off waivers from Seattle.

Oct 21, 2021

• The New York Yankees announced first base coach and outfield instructor Reggie Willits will be leaving.

Oct 19, 2021

• The New York Yankees fired third-base coach Phil Nevin, hitting coach Marcus Thames and assistant hitting coach P.J. Pilittere. Signed manager Aaron Boone to a three-year contract.

Oct 18, 2021

• The Washington Nationals named Darnell Coles hitting coach.

Oct 17, 2021

• The New York Mets announced INF Brandon Drury refused an outright assignment to Syracuse (Triple-A East) and elected free agency.

Oct 15, 2021

• The Chicago Cubs named Carter Hawkins general manager.
• The Oakland Athletics agreed to terms with RHP Alejandro Manzano on a minor league contract.

Oct 14, 2021

• The Arizona Diamondbacks claimed RHP Zack Burdi off waivers from Baltimore.
• The St. Louis Cardinals terminated the contract of manager Mike Shildt.

Oct 13, 2021

• The Philadelphia Phillies named Kevin Long hitting coach for the 2022 season.

Oct 11, 2021

• The Texas Rangers announced RHP Mike Foltynewicz elected free agency after clearing outright waivers.
• The Arizona Diamondbacks named Mike Fetters bullpen coach, Dave McKay first base coach, Tony Perezchica third base coach and Luis Ureta promoted to new role on the staff. Chris Cron coach, Robby Hammock quality control & catching coach, Matt Herges pitching coach, Drew Hedman co-hitting coach and Rick Short co-hitting coach will not return to the Major League coaching staff.
• The Pittsburgh Pirates fired third base coach Joey Cora.

Oct 10, 2021

• The New York Yankees released LHP Andrew Heaney as a free agent after he refused an outright assignment.
• The Atlanta Braves selected the contract of LF Terrance Gore from Gwinnett (Triple-A East) and agreed to terms on a major league contract.

Oct 7, 2021

• The Boston Red Sox reassigned 2B Jonathan Arauz, C Connor Wong and CF Jarren Duran to the minor leagues.

Oct 6, 2021

• The St. Louis Cardinals selected the contract of 1B Juan Yepez from Memphis (Triple-A East) and agreed to terms on a major league contract.
• The Texas Rangers claimed RHP Edwar Colina off waivers from Minnesota and place him on the 60-day IL.
• The Los Angeles Dodgers selected the contract of OF Steven Souza Jr. from Oklahoma City and agreed to terms on a major league contract.
• The San Diego Padres fired manager Jayce Tingler.
• The Chicago Cubs fired hitting coach Anthony Lapoce.

Oct 5, 2021

• The Detroit Tigers named Gabe Ribas director of pitching.
• The Colorado Rockies agreed to terms with RHP Anthony Senzatela on a five-year contract and 1B C.J. Crohn on a two-year contract.
• The Washington Nationals agreed to terms with INF Alcides Escobar on a one-year contract.
• The Dallas Stars signed D Artem Grushnikov to a three-year contract.
• The Nashville Predators claimed F Rem Pitlick off waivers from Minnesota.

Oct 2, 2021

• The New York Mets signed RHP Claudio Scotti to a minor league contract.
• The Colorado Rockies named Bill Schmidt general manager. Promoted Danny Montgomery to vice president and assistant general manager of scouting and Zack Rosenthal to vice president and assistant general manager of baseball operations and assistant general counsel.
• The Chicago Cubs selected the contract of RHP Joe Biagini from Iowa (Triple-A East) and signed him to a major league contract.

Oct 1, 2021

• The Oakland Athletics selected INF Pete Kozma from Las Vegas and agreed to terms on a major league contract.
• The Atlanta Braves selected the contract of RHP Spencer Strider from Gwinnett (Triple-A East) and agreed to terms on a major league contract.
• The St. Louis Cardinals agreed to terms with RHP Adam Wainwright on a one-year contract for 2022.