In the wake of Wednesday's promotion and debut of outfielder George Springer, one of the top prospects in a loaded Houston Astros system—not to mention, all of Major League Baseball—it's time to put together a batch of some other youngsters who are what Springer was merely a few days ago to fantasy owners in keeper leagues. That is, a top-tier prospect who isn't currently in the majors but should be soon enough and one who will make a major fantasy impact upon arrival or soon thereafter.
While this list can apply to owners in re-draft leagues (i.e., 2014 season only) who could pick up one or more of these elite, nearly big league-ready prospects to help at some point this season, the focus here is keeper-format based. In other words, these prospects should be up at some point in 2014, but the bigger impact is likely to come in 2015.
As such, owners in leagues where you can hang onto more than a few players heading into next season (say, five or more keepers), you should be paying close attention to these 10 hot-shot prospects for their inevitable call-ups and be ready to pounce sooner than later—if not now.
After all, what fantasy owner wouldn't want to add a little future to the present?