Amed Rosario (SS, NYM) - Waiver Wire Pickups

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ANALYSIS: While a torn ligament in the left thumb may be bad news for Mets shortstop Asdrubal Cabrera, it could be a huge boost for Amed Rosario and his soon-to-be fantasy owners. Cabrera hasn't hit the DL yet, but if/when he does, be ready to pounce on top prospect Rosario. He has been tearing it up in Las Vegas this season, hitting .359 with 22 RBI and seven steals. Rosario was thought initially to be a defensive whiz with the potential for some pop and moderate speed, but he is hitting at a much higher clip at an earlier age than anticipated. Don't expect any power and temper expectations in terms of steals - his high in a minor league season is 19 SB. Calling him a slightly more nimble Dansby Swanson would have sounded like a big compliment months ago, but rest assured the ceiling is high for both players.

Rosario is just 21 years old and hasn't sampled Major League pitching yet, so he remains a big unknown once he makes his arrival. He won't light up any single category, so a high average will be his best chance to contribute in fantasy leagues. Like any rookie, you are betting on talent and hoping for the best if you add him. He fits best on deeper mixed league, NL-only, or keeper rosters right now.