O'Hoppe isn't exactly a sure thing at catcher either, he's hitting well, but not that well, given it's Reading.
There's some question whether his ceiling is a top backup or starter.
He's probably not as good defensively as Marchan.
And Stubbs and Sands are both ahead of him, and Perez behind him.
Marsh is a gamble, but with Rojas and Muzzioti two years away (if ever), one they probably felt they had to make.
Moniak still hasn't shown he can hit a breaking ball, Vierling that he can hit RH pitching, and Herrera is history.
If they can get Marsh back on track (up his BB rate, cut back on the Ks) they might have the leadoff hitter they're desperate to find.