January 13, 2019

Nationals  designate Matt Reynolds for assignment

January 16, 2019

Nationals  sign Paolo Espino

February 08, 2019

Nationals  designate Trevor Gott for assignment

February 13, 2019

Trevor Gott traded from Nationals  to Giants 

March 27, 2019

Nationals  place Michael Taylor on the injured list

April 03, 2019

Nationals  place Trea Turner on the injured list

April 13, 2019

Nationals  place Justin Miller on the injured list

April 28, 2019

Nationals  place Ryan Zimmerman on the injured list

April 30, 2019

Nationals  place Anthony Rendon on the injured list

Nationals  designate Austin Adams for assignment

May 04, 2019

Nationals  place Juan Soto on the injured list

Austin Adams traded from Nationals  to Mariners 

May 05, 2019

Nationals  place Matt Adams on the injured list

May 09, 2019

Nationals  place Andrew Stevenson on the injured list

Nationals  sign Gerardo Parra as a free agent

May 17, 2019

Nationals  place Anibal Sanchez on the injured list

May 18, 2019

Nationals  place Justin Miller on the injured list

June 16, 2019

Nationals  place Kyle Barraclough on the injured list

July 12, 2019

Nationals  sign Brad Boxberger

July 13, 2019

Nationals  place Max Scherzer on the injured list

July 21, 2019

Nationals  place Austin Voth on the injured list

July 23, 2019

Nationals  place Ryan Zimmerman on the injured list

July 29, 2019

Nationals  place Max Scherzer on the injured list

July 30, 2019

Nationals  designate Justin Miller for assignment

July 31, 2019

Nationals  designate Javy Guerra for assignment

Daniel Hudson traded from Blue Jays  to Nationals 

August 04, 2019

Nationals  place Roenis Elias on the injured list

August 06, 2019

Nationals  designate Kyle Barraclough for assignment

Nationals  sign Asdrubal Cabrera as a free agent

August 12, 2019

Nationals  sign Greg Holland

August 18, 2019

Nationals  place Sean Doolittle on the injured list

October 31, 2019

Asdrubal Cabrera became a free agent

Daniel Hudson became a free agent

Gerardo Parra became a free agent

Anthony Rendon became a free agent

November 01, 2019

Matt Adams became a free agent

November 02, 2019

Ryan Zimmerman became a free agent

Yan Gomes became a free agent

Stephen Strasburg became a free agent

December 02, 2019

Javy Guerra became a free agent

December 08, 2019

Nationals  sign Kyle Finnegan as a free agent

December 09, 2019

Nationals  sign Stephen Strasburg as a free agent

December 10, 2019

Nationals  sign Yan Gomes as a free agent