Obviously, in their eyes, it IS "Gallo or bust" at 1st. That's the "some reason."
And quite honestly, I wouldn't put Julien at 1st either. I have no idea about Wallner, but they do. And they've spoken clearly.
What I WOULD do is have Solano on the IL and an actual option on the roster. And Gallo wouldn't be on the roster, for quite some time now.
But he is, and it's no mystery why he's in the lineup. Given the options, who should Rocco have at 1st tonight? Vazquez?