Arntzen debuted in the A 's first game of the season .
Arntzen hurled the final inning of relief in a loss to the Washington Senators in Griffith Stadium , surrendering two hits and a run .
Debuting in the A 's first game of the season , Arntzen hurled the final inning of relief in a loss to the Washington Senators in Griffith Stadium , surrendering two hits and a run .