Tigers' Upton exits after injuring calf

The Detroit Tigers could be without one of their top hitters as they continue their march toward the postseason after Justin Upton exited Monday's game against the Twins with a left calf strain.

Upton, who appeared to suffer the injury while trying to catch Brain Dozier's third-inning homer, is listed as day to day, the team said.

Following a prolonged slump to start to the season, Upton's caught fire of late for the surging Tigers. The power-hitting left fielder entered Monday with nine homers and four doubles in his last 20 games.