SAN DIEGO -- Nationals left-hander Matt Grace threw a scoreless inning during a Minor League rehab assignment on Tuesday night, his first appearance for Triple-A Syracuse as he works his way back from a sore left groin.
Grace will throw again Thursday before he is likely activated. He has been on the disabled list since April 21, and resumed throwing off a mound last week.
Grace issued a leadoff walk during the seventh inning Tuesday night before he retired the next three batters. Ideally, the Nationals would like him to throw multiple innings in a rehab outing before he rejoins the team's relief corps.