Just because a prospect didn't get a September call-up—costing them some service time and a nice big-league paycheck or two to close out the year—doesn't mean they're being punished. After all, top prospects are typically handled with caution, especially pitchers who have already logged a sizable amount of innings throughout the season.
Sure, it would be nice for a team's fan base to get an early look at a player who is expected to be a huge part of that team's future. But it would also be nice for that pitcher to come into the following season with a fresh arm after not being overworked the previous season.
And it would certainly be beneficial for a hitting prospect to get his feet wet against big league pitching. Because of 40-man roster implications, however, a prospect not yet eligible to be drafted in the Rule 5 draft during the upcoming offseason is often excluded from the September call-ups in order for the organization to maintain roster flexibility.
Several recent call-ups making their debuts this month have a chance to be in the majors for good, and a few will be Rookie of the Year candidates in 2014—but that's also the case for plenty of others who are going home after the minor league season ends.
Here are eight notable 2013 September call-ups snubs who figure to debut next season.