Second baseman Yoan Moncada (24) of the Greenville Drive, right, talks with hitting coach Nelson Paulino in a game against the Charleston RiverDogs on Sunday, May 24, 2015, at Fluor Field at the West End in Greenville, South Carolina. The Cuban-born 19-year-old Red Sox signee has been ranked the No. 1 international prospect in baseball by Baseball America. Charleston won 3-2. (Tom Priddy/Four Seam Images)