Strasburg (back) has been announced as the Nationals' starter Sunday against the Reds, according to C. Trent Rosecrans of the Cincinnati Inquirer.
Strasburg, who tossed a couple of successful bullpen sessions during the week, has been dealing with an upper back strain that landed him on the disabled list. In his one start against the Reds this season, Strasburg was hit up for three runs (two homers) in 5.1 innings.