Joseph Rosa

Organization Prospect Rankings

• 
  Ranked Seattle Mariners #25 prospect in 2018
  Rosa was born in New York and grew up in the U.S., but he moved to the Dominican Republic and signed with the Mariners for $30,000 in 2014. The diminutive switch-hitter spent most of his third professional season at short-season Everett, where he was named a Northwest League all-star. Rosa has a sweet swing from both sides of the plate with better feel to hit from the left side, but needs to consistently trust himself and his instincts and not get into bad habits. While his size and speed indicate that he's more likely a gap-to-gap hitter, Rosa has some power as evidenced by the .235 isolated power he put up at Everett. He's a plus runner but was successful in only seven of 13 stolen base attempts in 2017. Rosa's best position is at second base because his average arm works better on that side of the bag, but he's capable of handling shortstop in a limited role. Rosa finished 2017 with low Class A Clinton, and he'll head back there in 2018.