The Boston Red Sox have been trying to thread the needle between winning now and developing superstar prospects, and it's created sticky situations galore. Second baseman Kristian Campbell joined the team straight out of spring training and signed an eight-year extension shortly thereafter.

Marcelo Mayer sent a pair of moonshots into the Fenway Park stands as the Red Sox rookie is starting to find his groove at the plate.

BOSTON (AP) — Rookie Marcelo Mayer hit two of Boston’s four solo home runs and the Red Sox outlasted the Tampa Bay Rays 4-3 on Wednesday night. Abraham Toro added a go-ahead homer in the fifth inning, and Jarren Duran also hit one to help Boston earn its second series win over the Rays this season.