In a 10 team league I don't think Mauer should be drafted at all, let alone in the 11th round. That's way too early. I don't think he'll be among the 10 best catchers, so unless it's a dynasty league, or a keeper where you keep enough players to make Mauer good enough to keep, I would leave him alone. In the 11th round you should be able to get somebody like Kendall or Varitek for a 10 team league. Guys like Castro and Molina could easily out-perform Mauer this year and are almost always undrafted, even in 18 team leagues (mine at least). You can do much better than that.
"Jack, will you call me, if you're able?"
"I've got your phone number written, in the back of my Bible."