One for sure and one total guess

The for sure...as sure as anything can be that you find on the internet...is the announcement of the manager in Beloit:

Nelson Prada will begin his second year as manager of the Twins' Class A affiliate Beloit Snappers (Midwest League) after finishing 71-67 last season. Prada, 32, spent the 2004-07 seasons as manager of the GCL Twins. He has a 162-139 (.538) record during his four years of Minor League managerial experience. Gary Lucas will continue his second stint (2005) as pitching coach after spending the 2006-07 seasons as pitching coach for Double-A New Britain. Alan Rail will return for his fifth season as trainer with the Snappers.

The total guess has to do with this bit of information...

The Nationals announced on Friday that Jim Riggleman, Marquis Grissom, Pat Listach, Rick Eckstein and Randy Knorr will be members of manager Manny Acta's coaching staff in 2009.
...
Listach -- who comes highly recommended by Cubs manager Lou Piniella, who is one of Bowden's mentors -- will be the third-base coach and infield instructor. He joins the Nationals after spending the last three seasons compiling a 231-189 record managing in the upper levels of the Cubs' farm system.

The upper levels last year was Iowa in the PCL. Follow me here. Listach moves out. There is an opening. Other managers -- like Ryne Sandberg and Jody Davis -- in the Cubs organization move up. Peoria gets a new manager in 2009*.

There is the total guess.

*-I'm guessing either Billy Williams or Ernie Banks.