Scherzer, who signed a seven-year, $210 million contract as a free agent in January, missed his scheduled start Tuesday against Atlanta after injuring his thumb while batting last week.
But Washington manager Matt Williams said that Scherzer felt no lingering problems after his bullpen session the previous day.
''He threw again today, just some flat-ground catch, and he feels good,'' Williams said. ''He's ready to go.''
Scherzer is 1-2 with a 1.26 ERA in four starts.