This article references A.j. Pierzynski, Addison Russell, Archie Bradley, Arismendy Alcantara, B.J. Upton, Blake Swihart, Christian Bethancourt, Christian Vazquez, Darwin Barney, Evan Gattis and more! Hello, RotoBallers. I am back after a few weeks off to update some MLB prospects, call-ups and hot minor leaguers. This week we saw the call-up of the first of the Cubs' wave of prospects, infielder Arismendy Alcantara, and a rookie changing of the guard behind the plate in Boston. So without further ado . . . Recent MLB Prospect Call-UpsArismendy Alcantara, 2B/SS, Chicago CubsAlcantara is a 22-year old switch-hitting Dominican infielder who has risen through the ranks of the [...] Keep on reading: Eye On The Minors: MLB Prospects On Their Way to Being Majors