Nationals Roster & Staff
Transactions
| Date | Transaction |
| 04/30/21 | Washington Nationals activated LHP Jon Lester from the 10-day injured list. |
| 04/30/21 | Washington Nationals optioned RHP Steven Fuentes to Nationals Alternate Training Site. |
| 04/30/21 | Washington Nationals placed LHP Luis Avilan on the 60-day injured list. Left elbow inflammation. |
| 04/20/21 | Washington Nationals recalled RHP Steven Fuentes. |
| 04/20/21 | Washington Nationals recalled RHP Steven Fuentes. |
| 04/20/21 | Washington Nationals recalled OF Yadiel Hernandez. |
| 04/20/21 | Washington Nationals recalled OF Yadiel Hernandez. |
| 04/20/21 | Washington Nationals optioned RHP Ryne Harper to Nationals Alternate Training Site. |
| 04/20/21 | Washington Nationals recalled RHP Steven Fuentes from Nationals Alternate Training Site. |
| 04/20/21 | Washington Nationals placed LF Juan Soto on the 10-day injured list. |
| 04/20/21 | Washington Nationals recalled OF Yadiel Hernandez from Nationals Alternate Training Site. |
| 04/20/21 | Washington Nationals placed LF Juan Soto on the 10-day injured list. Left shoulder strain. |
| 04/20/21 | Washington Nationals recalled OF Yadiel Hernandez. |
| 04/18/21 | Washington Nationals selected the contract of RHP Paolo Espino. |
| 04/18/21 | Washington Nationals placed RHP Wander Suero on the 10-day injured list. Left oblique strain. |
| 04/18/21 | Washington Nationals recalled RHP Ryne Harper from Nationals Alternate Training Site. |
| 04/18/21 | Washington Nationals selected the contract of RHP Paolo Espino from Nationals Alternate Training Site. |
| 04/18/21 | Washington Nationals selected the contract of RHP Paolo Espino. |
| 04/18/21 | Washington Nationals placed RHP Stephen Strasburg on the 10-day injured list. Right shoulder inflammation. |
| 04/16/21 | Washington Nationals recalled RHP Kyle McGowin from Nationals Alternate Training Site. |
| 04/16/21 | Washington Nationals recalled RHP Kyle McGowin. |
| 04/16/21 | Washington Nationals recalled RHP Kyle McGowin. |
| 04/16/21 | Washington Nationals placed LHP Luis Avilan on the 10-day injured list. Left elbow inflammation. |
| 04/16/21 | Washington Nationals signed free agent LF Daniel Palka to a minor league contract. |
| 04/14/21 | Washington Nationals sent C Jonathan Lucroy outright to Nationals Alternate Training Site. |
| 04/12/21 | Washington Nationals activated 1B Josh Bell from the 10 day injured list. |
| 04/12/21 | Washington Nationals activated LF Kyle Schwarber from the 10 day injured list. |
| 04/12/21 | Washington Nationals activated 1B Josh Bell from the 10 day injured list. |
| 04/12/21 | Washington Nationals activated 2B Josh Harrison from the 10 day injured list. |
| 04/12/21 | Washington Nationals activated 2B Josh Harrison from the 10 day injured list. |
| 04/12/21 | Washington Nationals recalled SS Luis Garcia. |
| 04/12/21 | Washington Nationals designated C Jonathan Lucroy for assignment. |
| 04/12/21 | Washington Nationals optioned OF Yadiel Hernandez to Nationals Alternate Training Site. |
| 04/12/21 | Washington Nationals activated 1B Josh Bell from the 10-day injured list. |
| 04/12/21 | Washington Nationals optioned SS Luis Garcia to Nationals Alternate Training Site. |
| 04/12/21 | Washington Nationals activated LF Kyle Schwarber from the 10-day injured list. |
| 04/12/21 | Washington Nationals activated 2B Josh Harrison from the 10-day injured list. |
| 04/12/21 | Washington Nationals activated 2B Josh Harrison from the 10-day injured list. |
| 04/12/21 | Washington Nationals activated 2B Josh Harrison from the 10 day injured list. |
| 04/12/21 | Washington Nationals activated 1B Josh Bell from the 10 day injured list. |
| 04/12/21 | Washington Nationals activated 1B Josh Bell from the 10-day injured list. |
| 04/12/21 | Washington Nationals activated LF Kyle Schwarber from the 10-day injured list. |
| 04/10/21 | Washington Nationals activated LHP Patrick Corbin from the 10-day injured list. |
| 04/10/21 | Washington Nationals activated P Patrick Corbin from the 10 day injured list. |
| 04/10/21 | Washington Nationals activated P Patrick Corbin from the 10 day injured list. |
| 04/10/21 | Washington Nationals activated LHP Patrick Corbin from the 10-day injured list. |
| 04/10/21 | Washington Nationals optioned P Kyle McGowin to Nationals Alternate Training Site. |
| 04/10/21 | Washington Nationals activated P Patrick Corbin from the 10 day injured list. |
| 04/09/21 | Washington Nationals optioned SS Carter Kieboom to Nationals Alternate Training Site. |
| 04/09/21 | Washington Nationals optioned C Tres Barrera to Nationals Alternate Training Site. |
| 04/09/21 | Washington Nationals activated P Brad Hand from the 10 day injured list. |
| 04/09/21 | Washington Nationals activated SS Jordy Mercer from the 10-day injured list. |
| 04/09/21 | Washington Nationals activated C Yan Gomes from the 10 day injured list. |
| 04/09/21 | Washington Nationals activated SS Jordy Mercer from the 10 day injured list. |
| 04/09/21 | Washington Nationals activated C Alex Avila from the 10 day injured list. |
| 04/09/21 | Washington Nationals activated P Brad Hand from the 10 day injured list. |
| 04/09/21 | Washington Nationals activated SS Jordy Mercer from the 10 day injured list. |
| 04/09/21 | Washington Nationals activated C Yan Gomes from the 10 day injured list. |
| 04/09/21 | Washington Nationals activated C Alex Avila from the 10 day injured list. |
| 04/09/21 | Washington Nationals activated P Brad Hand from the 10 day injured list. |
| 04/09/21 | Washington Nationals activated SS Jordy Mercer from the 10 day injured list. |
| 04/09/21 | Washington Nationals activated C Yan Gomes from the 10 day injured list. |
| 04/09/21 | Washington Nationals activated C Alex Avila from the 10 day injured list. |
| 04/09/21 | Washington Nationals optioned P Ryne Harper to Nationals Alternate Training Site. |
| 04/09/21 | OF Cody Wilson returned to Nationals Alternate Training Site from Washington Nationals. |
| 04/09/21 | Washington Nationals activated SS Jordy Mercer from the 10-day injured list. |
| 04/09/21 | Washington Nationals activated LHP Brad Hand from the 10-day injured list. |
| 04/09/21 | Washington Nationals activated C Yan Gomes from the 10-day injured list. |
| 04/09/21 | Washington Nationals activated C Alex Avila from the 10-day injured list. |
| 04/09/21 | Washington Nationals activated SS Jordy Mercer from the 10-day injured list. |
| 04/09/21 | Washington Nationals activated LHP Brad Hand from the 10-day injured list. |
| 04/09/21 | Washington Nationals activated C Alex Avila from the 10-day injured list. |
| 04/09/21 | Washington Nationals activated C Yan Gomes from the 10-day injured list. |
| 04/08/21 | Washington Nationals optioned P Ben Braymer to Nationals Alternate Training Site. |
| 04/07/21 | Washington Nationals recalled P Ben Braymer from Nationals Alternate Training Site. |
| 04/06/21 | Washington Nationals recalled P Sam Clay. |
| 04/06/21 | Washington Nationals signed free agent C Jonathan Lucroy. |
| 04/06/21 | Washington Nationals recalled LHP Sam Clay. |
| 04/06/21 | Washington Nationals recalled LHP Sam Clay. |
| 04/06/21 | Washington Nationals recalled P Sam Clay. |
| 04/06/21 | Washington Nationals placed P Will Harris on the 10 day disabled list. |
| 04/06/21 | Washington Nationals placed P Jon Lester on the 10 day disabled list. |
| 04/06/21 | Washington Nationals recalled P Kyle McGowin from Nationals Alternate Training Site. |
| 04/06/21 | Washington Nationals recalled SS Carter Kieboom from Nationals Alternate Training Site. |
| 04/06/21 | Washington Nationals placed C Alex Avila on the 10 day disabled list. |
| 04/06/21 | Washington Nationals placed 1B Josh Bell on the 10 day disabled list. |
| 04/06/21 | Washington Nationals placed P Patrick Corbin on the 10 day disabled list. |
| 04/06/21 | Washington Nationals placed P Brad Hand on the 10 day disabled list. |
| 04/06/21 | Washington Nationals placed 2B Josh Harrison on the 10 day disabled list. |
| 04/06/21 | Washington Nationals recalled SS Luis Garcia from Nationals Alternate Training Site. |
| 04/06/21 | Washington Nationals recalled P Sam Clay from Nationals Alternate Training Site. |
| 04/06/21 | Washington Nationals recalled P Ryne Harper from Nationals Alternate Training Site. |
| 04/06/21 | Washington Nationals placed C Yan Gomes on the 10 day disabled list. |
| 04/06/21 | Washington Nationals placed SS Jordy Mercer on the 10 day disabled list. |
| 04/06/21 | Washington Nationals placed LF Kyle Schwarber on the 10 day disabled list. |
| 04/06/21 | Washington Nationals recalled C Tres Barrera from Nationals Alternate Training Site. |
| 04/06/21 | Washington Nationals recalled OF Yadiel Hernandez from Nationals Alternate Training Site. |
| 04/06/21 | Washington Nationals selected the contract of OF Cody Wilson from Nationals Alternate Training Site. |