With rosters set to expand, the Boston Red Sox are calling up Yoan Moncada for the stretch run.

Moncada will join the Major League club in Oakland on Friday from Double-A Portland.

John Farrell has suggested that Moncada, considered the club's top prospect, could get a majority of the at-bats at third base.

Entering play Wednesday night, Moncada was batting .298 with 31 doubles, six triples, 15 homers, 45 stolen bases, a .411 on-base percentage and a .928 OPS in 400 at-bats between Class A Salem and Double-A Portland.