This week we continue our annual review of the top prospects in baseball by position. Similar to the catching crop outlined last week, the 1B position is very thin. Only four 1B appear in our Top 100 list and only one player figures to win a starting job in Spring Training.

A study of Top 100 prospect lists will usually yield at least 50 prospects that are generally included on most, if not all, of the lists. This essay will feature 10 minor leaguers who are unlikely residents on most Top 100 lists entering the 2012 campaign, but could be due for a step up.

Callups for the week of 9/16-22

Profiles on all of the callups for this week.