The Chicago Cubs struck gold with their bargain bin left-handed relief pickups this season in veterans Caleb Thielbar and Drew Pomeranz, who combined for a 2.43 ERA over 107 2/3 innings of work, playing integral roles in Craig Counsell's bullpen.
With both men set to hit free agency along with the likes of Brad Keller, Aaron Civale, Michael Soroka and Ryan Brasier, Jed Hoyer and Carter Hawkins have work to do in rebuilding a relief corps that ranked fifth in the NL with a 3.78 ERA. One name to keep an eye on? Former first-round pick Foster Griffin, who is looking to return to the big leagues after spending the last three years in Japan.