Navarro is making $3m, Castillo is making $530,000. For the limited amount of time the backup catcher is even going to be on the field, that's a pretty good savings. Esp when you consider that WC could serve as backup DH in case of injury. Castillo is making $2.1 million for 2015. Stupid, non-updated Google You should use awesome, always updated Cot's: http://www.baseballprospectus.com/compensation/cots/