As big league clubs prepare to expand their rosters, we take a look at potential September call-ups with enough upside to make a fantasy impact.

Call-ups for August 24, 2014: Kyle Lobstein (LHP, DET)

As the 2014 minor league season enters its last week, we take a look at the year’s top performances; led by the Chicago Cubs Kris Bryant (3B).

An early look at how some of the top picks from the June 2014 draft have started their careers.

Call-ups for August 16, 2014: Jon Edwards (RHP, TEX)

Using stats to find under-the-radar minor leaguer prospects on the rise.

Call-ups for August 9, 2014: Trevor May (RHP, MIN) and Andrew Chafin (LHP, ARI).

Call-ups for August 3, 2014: Dan Butler (C, BOS)

Now that the 2014 trade deadline has passed, we take a look at some of the most prominent prospects to change organizations.

Call-ups for July 27, 2014: Allen Webster (RHP, BOS) and Andrew Susac (C, SF).

Which prospects are most likely to make a significant impact down the stretch?