Augie Ojeda.*
The Diamondbacks released him, so the Cubs snatched him up.
The Cubs also signed Braden Looper, who didn't even pitch in the majors last season. In 2009 he pitched for Milwaukee and clocked in with a 5.22 ERA.
This is clearly the "throw as much crap as you can against the wall and see what sticks" approach that has always served the Cubs so well.
*I mock, but I always did like Augie. Doesn't it seem like he killed the Cubs when he was playing in Arizona, or is it just me?
