Major League Baseball rosters are about to get a whole bunch of new additions in September. Some of them might stick around for good.
We're going to consider one likely September call-up for each MLB team who has the potential to become a major league regular. The list mostly consists of prospects, although some are players with prior major league experience.
A key thing to remember about September call-ups is that players must be on the 40-man roster. Things are liable to change, but for now that excludes young luminaries such as Vladimir Guerrero Jr.