Seth Lugo took over for Syndergaard after the starter threw 4 2/3 frames, giving up three runs and striking out five Washington hitters while walking three.
Mets stars Yoenis Cespedes and Noah Syndergaard have left New York's game against Washington with injuries. Strasburg tossed 7 sparking innings, allowing just 2 hits and 3 walks, yielding just 1 run over 7 innings to earn the decision and lower his season ERA to 2.62. After throwing a 2-2 fastball, clocked at 94 miles per hour, to Jayson Werth, Mets catcher Rene Rivera noticed some apparent discomfort and alerted trainers, who met Syndergaard on the mound.
During an at-bat against Jayson Werth in the fifth, assistant team trainer Brian Chicklo and manager Terry Collins came out to check on Syndergaard, who is already pitching through a bone spur in his right elbow.
The injuries came hours after NY announced struggling pitcher Matt Harvey will have season-ending surgery for thoracic outlet syndrome.
Both Cespedes and Syndergaard were selected for Tuesday's MLB All-Star Game, but their participation in the Mid-Summer Classic is now in doubt.
Clint Robinson gave Washington a 2-0 lead by belting a two-run homer to right field off Syndergaard in the top of the second. He joins Madison Bumgarner, Clayton Kershaw and Friday opponent Stephen Strasburg - whom the Nats do not want pitching in the All-Star Game due to his own recent injury issue - in that regard, Jon Morosi of Fox Sports notes. Wilmer Flores doubled and Jose Reyes legged out an infield single against former Yankees righty Shawn Kelley to start the eighth, but Oliver Perez retired Curtis Granderson on a soft infield liner for the first out and Blake Treinen got Lagares to bounce into a 4-6-3 double play.
Washington improved to 15-1 in Strasburg's outings this season.