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.

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.

Red Sox rookie Marcelo Mayer provided plenty of pop at the plate for the Red Sox on Wednesday with two home runs.