This article references Andrew Heaney, B.J. Upton, Dan Uggla, Eddie Butler, Eugenio Suarez, Franklin Morales, Gregory Polanco, Jonathan Gray, Jonathan Singleton, Oscar Taveras and more! Recent MLB Prospect Call-UpsIn the past week, we finally got some big name MLB prospects called up, headlined by St. Louis Cardinals outfielder Oscar Taveras, who homered in his second major league at bat Saturday. Not to be outdone, Houston 1B prospect Jonathan Singleton homered in his first major league game after getting the call-up (and a five-year contract) on Tuesday. The Braves seemingly ended the Dan Uggla era in Atlanta with the callup of second-base prospect Tommy La Stella.[...] Keep on reading: Eye on the Minors: June Call-Ups for Fantasy Baseball