Ronaldo Hernandez

Of the top power-hitting catchers in the minors, Hernandez is the best bet to also hit for a relatively high average. He ranked second in the Midwest League in home runs (21), fifth in ISO (.210) and eighth in wRC+ (133) -- production that looks all the more impressive considering he had the 12th-lowest K% (15.4) in the league and did all this as an age-appropriate catching prospect. The only concern with Hernandez is whether his defense proves good enough for the Rays, who value catcher framing as much as any team, to someday give him the bulk of the starts behind the dish. His 70-grade arm is more than enough to control the running game, and he is a good game caller, but he needs to improve as a blocker and framer. Those defensive issues will lead to a gradual ascent up the organizational ladder, so don't expect to see him in the majors until 2021 or 2022. If his defense gets up to scratch, Hernandez could hit .260 or .270 with 25-plus home runs annually.

Hernandez is essentially where Keibert Ruiz was a year ago, and now Ruiz is the top fantasy catching prospect in the game. A 6-foot-1, 185-pound backstop who draws rave reviews on both sides of the ball, Hernandez is a cinch to stick behind the plate and was one of the best hitters in the Appalachian League last year. He finished eighth in the league in wRC+ (135) and struck out just 15.9 percent of the time. For the third year in a row, he made strides as a power hitter, upping his ISO from .146 in 2016 to .175 last season. The one major difference between Hernandez and Ruiz is that the former will begin his age-20 season at Low-A, while the latter already has 38 games under his belt at High-A and won't turn 20 until July. It's not a perfect comparison, but catchers who are quality defenders and can really hit are the black rhinos of professional baseball. This will be the last offseason to grab Hernandez in serious dynasty leagues.