Three full days in to the MLB season and things are definitely becoming more clear in the world of closers and other bullpen affairs. Blake Treinen and Greg Holland are the big winners/movers on the list for the week, with Santiago Casilla as the biggest surprise as it seems like he could be locked into the 9th inning role in Oakland. As this list is updated from week to week, keep in mind, this doesn't include pitchers who are currently on the DL or suspended.
TIER 1: Nothing Compares 2 U
1. Kenley Jansen (Los Angeles Dodgers)—Grant Dayton, Sergio Romo
2. Aroldis Chapman (New York Yankees)—Dellin Betances, Tyler Clippard
3. Edwin Diaz (Seattle Mariners)—Nick Vincent, Dan Altavilla
4. Zach Britton (Baltimore Orioles)—Brad Brach, Mychal Givens
5. Ken Giles (Houston Astros)—Luke Gregerson, Will Harris
