Wheeler won't start as scheduled Wednesday since the game was postponed due to the Nationals' COVID-19 outbreak, Jeff Passan of ESPN.com reports.
Trea Turner was forced to exit Tuesday's contest during the first inning after it was discovered he tested positive for the virus, and Washington is apparently dealing with an outbreak involving multiple players and coaches. The game will be made up via a doubleheader Thursday, and Wheeler is poised to start one of those contests.