Zack Wheeler (6-8, 3.60 ERA) gets the start for the Mets, opposed by Gio Gonzalez (6-7, 3.88 ERA) for Washington.
At the Mets' complex in Florida, Matt Harvey is scheduled to continue his rehab from Tommy John surgery by throwing 25 pitches from the mound.
In case you missed it...
Bobby Abreu was designated for assignment Monday night.
Kirk Nieuwenhuis was called up from Triple-A Las Vegas.
Jenrry Mejia dealt with a back issue during his outing on Monday, but downplayed it after the game.
Jacob deGrom was named the NL Rookie of the Month for July, during which he went 4-1 with a 1.39 ERA.