4. Tucker Barnhart
Former long-time Cincinnati Reds catcher Tucker Barnhart was never a great hitter, but he is taking things to a new low with the Cubs this year. In 78 plate appearances, Barnhart has a .162 batting average, 4 RBIs, 1 home run, and a laughable wRC+ of 27. He was not brought aboard to be a difference-maker at the plate, but those numbers are unbelievably bad.
And it's not like he's an incredible influence on the pitching staff either. Even though Barnhart has a player option for next season, I would opt to make Miguel Amaya the everyday catcher with Yan Gomes as his backup. That would be the right decision for the future of this team in my opinion.