Buerhle is an old fart who doesn't K anyone, so it's hard to roster him thru the cutdown. But when the season starts and injuries hit, suddenly he's a moderately attractive depth provider of Winz, and hopefully an ERA/OBPA contributor.
You can't replace Jose Fernandez, but between Garza and Buerhle, hopefully I'll have replaced his W/K contributions. The ratios will suffer regardless.