Why do starters keep coming into the game in relief?

I am currently managing a season and I play every game, why does max scherzer come into the game in relief in the 8th when im up a run? It’s not realistic, so there a way to change sliders to make sure this doesn’t happen anymore, this is ticking me off that the team I face will use all of their starters in one game.

This is a regular season game?

It’s common. I see starters pitching back to back games. I also see starters get replaced after 1st inning and he inherits pitch count. Logic for CPU is messed yp

I haven’t had this issue