Well Alvarado is obviously not the closer, it was the 8th inning and they were losing. It's all about match-ups and situations. Unfortunately against the Braves there are no weak spots Strahm didn't do his job (get some of the lefties out) and they let him face the RHB anyway. Alvarado just didn't have it.
It should be hard for any bullpen to shut down our line-up too, and yet...
Strider is a RHP, there was no way Marsh wasn't starting yesterday. Merrifield and Pache will each get a start (at least) over the next three games, all LH starters (including the Reds on Monday).