Justin Wilson is the latest addition to a Tigers bullpen that has been almost completely overhauled in less than a month's time. You know that part already. You've also probably looked at his relevant stats and been fairly impressed, and maybe you've even watched a YouTube highlight reel of his strikeouts set to awesome/awful faux-metal music, in which case, you're both elated and somehow also angry.
What you may not have considered, however, is how well Justin Wilson performs under pressure.
Pressure is to relief pitching what sandwich-based arguments are to Twitter. You don't want to deal with it, but there's just no escaping it.