It's hard to predict how Sano's season will go, but I think one thing is a given - there will be several peaks, and several valleys in his hitting. As for backups, I've seen Blankenhorn has played some 1B, and with Rooker and Kiriloff potentially ending up there, we certainly have the prospect depth. Rooker should make the 26 man roster and back that spot up while occasionally playing LF.