Call-ups for August 23, 2012: Werner and McHugh.

The beginning of September is historically an exciting time. Kids are headed back to school and football season is starting. For baseball fans, September 1 is the time for roster expansion.

Call-ups for August 16, 2012: Florimon.

Call-ups for August 8, 2012: Barnes.

Call-ups for July 25, 2012: Matt Harvey.

Call-ups for July 18, 2012: Gose, Verdugo, Fife, Brown, and Hernandez.

Call-ups for July 7, 2012: Ciriaco, Anderson, and Hurley.

Call-ups for July 5, 2012: Dominguez, Heath, and Fien.

Call-ups for June 28, 2012: Waldrop, Bauer, and Cabrera.

Call-ups for June 20, 2012: Thornburg and Archer.

As the 2012 minor league season nears the All-Star break for most leagues, we can look back at the preseason Top 100 prospect list and make adjustments. Several players on that list have already reached the majors this season while others are years away from making contributions. Other top prospects are on the cusp of adding value to their respective big league clubs—some may be September call-ups whereas others could get the call any day.