When he has command he is elite, but there are games where he just keeps missing slider after slider giving up hard contact. Integral part of the team nonetheless, I would be very sad to see waluigi leave/traded!
Everyone has those games though. That's what this article is all about. He's been a top 20 reliever for the past 3 years. Something only he and 2 other pitchers have been able to accomplish. And he's getting better every year.