This week we continue our annual review of the top prospects in baseball by position, this time with top 3B prospects. On the surface, there doesn't appear to be any prospect assured of significant playing time in 2012. There aren't many openings at present, though a few prospects could take advantage of minor injuries or the lack of depth. The lack of major league-ready 3B shouldn't be any indication, however, of the quality of prospects at that position.

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.