Boston Red Sox starter Justin Masterson kept up his strong spring by pitching three perfect innings Tuesday in a 5-1 win over the split-squad Tampa Bay Rays.

Masterson struck out four as the Red Sox stretched their Grapefruit League winning streak to five. In five spring innings, Masterson has yet to surrender a run.

New Red Sox left fielder Hanley Ramirez hit an RBI double.

Jackie Bradley Jr., competing for playing time in the Boston outfield, doubled and singled with a walk.

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