Jim Callis, Jonathan Mayo and Jason Ratliff break down MLB Pipeline's new 2021 Top 30 Prospects lists -- four from the AL West (Astros, Angels, Rangers and A's), plus the Red Sox and Yankees. Hear updates on how potential top Draft picks Kumar Rocker, Jack Leiter, Jaden Hill and Sal Frelick have performed this season. And finally, Jim and Jonathan discuss which prospects have impressed in big league spring training games.

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