BOSTON — Red Sox starter Brayan Bello showed his athleticism while covering first base during the first inning Tuesday. He stretched out fully and kept his foot on the bag to complete a 3-6-1 double play and escape a bases-loaded jam. He fell to the dirt once the play was completed.

It took three hours and 14 minutes but the Red Sox emerged victorious over the visiting Seattle Mariners 8-3 on Tuesday night. Brayan Bello didn’t exactly dominate in his season debut, but backed