[Lukas Berger]

You can sometimes see this sort of thing in smaller leagues, especially with roster limits that mean teams don't always have enough rested pitchers (especially in some of the European leagues in out of the box OOTP).

So if you're seeing it a lot, you can always try increasing small roster limits to allow teams to carry more pitchers. Also, adjusting some of the other settings under 'league settings' > 'stats & ai' can help as well.

The main ones to look at here would be the pitcher stamina settings (make this higher), use of relievers (set this to less often) 'hook for starting pitcher' and 'hook for relief pitcher' (make these slower).