Why do they not switch to bullpen when starting pitcher Eovaldi is in trouble

[jontebond]

He has pitched 100+, why not change to bullpen? Anyone understanding baseball tactics that can explain this?

Thanks,
Jonas

[Ronald S.]

Their pen's not exactly reliable... 1.49 WHIP highest in baseball. Eovaldi probably gave them the best chance to win. Also used a lot of guys yesterday in the slugfest against the rays