I think they would rather call up Tucker since he spent more time in AAA and has a bit more defensive versatility but as long as Alvarez is out hitting by such a wide margin I would think they would go with him
I couldn't believe they let him pitch as long as they did. I watched a bunch of those games. 6.39 BB/9 is disgusting. I think they wait until he has a full year of success in the bullpen before moving him.