Here are the names of some pitchers who were in the Cubs bullpen in September 2021:
Jason Adam, Joe Biagini, Rex Brothers, Dillon Maples, Adam Morgan, Trevor Megill.
Those six pitchers combined for a 4.95 ERA, 1.449 WHIP, 87 walks and 194 strikeouts in 147 innings in 2021. That’s... pretty bad. (And that includes Biagini allowing no runs at all.)
The good news is that not one of those pitchers will be a Chicago Cub in 2022. Instead, the Cubs have brought in Steven Brault, Mychal Givens, Chris Martin, Daniel Norris, David Robertson and Drew Smyly, all of whom have had success at the MLB level.