Both Adam Wainwright and Michael Wacha are set to be free agents in 2020. If Waino decides to return, that will leave the St. Louis Cardinals with only the fifth spot to fill. It is unlikely we will see Wacha wear the Birds on the Bat next season after his substandard performance this year.
It’s no secret that the Cardinals organization likes to promote from within, and there are other options available assuming Wacha and/or Wainwright depart, such as Daniel Ponce de Leon or Genesis Cabrera for example.