I think you mean two (http://kansascity.ro...013&level='ALL'). He was 16 for 20 in saves last year, that's not really that amazing. Drew Storen was 43 for 48 in 2011 and is now in the minors (http://washington.na...013&level='ALL'). Relievers even "proven closers" are extremely volatile.
He didn't start closing until August last year. The save percentage wasn't dominant but the rest of the stats were. That 12.2 k/9 was a thing of beauty last year and he's been even better this year. The stats match the stuff too, he is nasty.