February 24, 2017

Nationals  place Jose Marmolejos on the injured list

April 10, 2017

Nationals  place Trea Turner on the injured list

April 29, 2017

Nationals  place Adam Eaton on the injured list

June 20, 2017

Nationals  sign Jackson Tetreault

Nationals  sign Gabe Klobosits

Nationals  sign Jake Cousins

June 30, 2017

Nationals  place Trea Turner on the injured list

July 07, 2017

Nationals  place Michael Taylor on the injured list

Nationals  sign Wil Crowe

July 14, 2017

Nationals  place Joe Ross on the injured list

July 16, 2017

July 27, 2017

Nationals  place Stephen Strasburg on the injured list

July 31, 2017

Brandon Kintzler traded from Twins  to Nationals 

August 13, 2017

Nationals  place Bryce Harper on the injured list

August 16, 2017

Nationals  place Brian Goodwin on the injured list

August 18, 2017

Nationals  place Max Scherzer on the injured list

September 04, 2017

Nationals  place Erick Fedde on the injured list

November 02, 2017

Brandon Kintzler became a free agent

Jose Lobaton became a free agent

Oliver Perez became a free agent

December 16, 2017

Nationals  sign Tommy Milone

December 21, 2017

Nationals  sign Brandon Kintzler as a free agent

December 22, 2017

Nationals  sign Matt Adams as a free agent