These players are from the last season not 2 years ago.
P Rich Harden is 0-0 with a 2.79era in 9.2 innings but has walk 8.
RP Aaron Heilman is 0-0 with a 3.18era in 5.2 innings.
U Jake Fox is batting .111 with 1hr and 3rbi in 18 at-bats.
RP Kevin Gregg is 0-0 with a 0era in 4.1 innings.
OF Milton Bradley is batting .147 with 2hr and 8rbi in 34 at-bats.
2B Aaron Miles who was traded in the offseason was move aroung 2 times and was eventually release by the Reds. He is still a free agent.
As you can see all the players the Cubs lost so far aren't a big deal right now but is still early. I will have updated all season long on ex Cubs.