The Oakland A's have released a product of the Cubs farm system and a pitcher once described as having the best slider in baseball. I guess it's safe to say who won the Michael Wuertz for Richie Rob.Nett (deleted) and Justin Sellers (is he still around?) deal: That would be former Cubs GM prospect Billy Beane, who did get an outstanding 2.4 fWAR season out of Wuertzy in 2009 before injuries, walks and home run balls killed his value in 2010 and '11. For what it's worth, his K rate stayed strong in both years (9.08 and 8.55, respectively). He's 32 and will be 33 next season. Worth a spring training invite ... for old time's sake?