The ERA leaderboard, organized greatest to least, is a bit of a shocker. At the top you’ll find both of the defending Cy Young award winners (David Price and R.A. Dickey), as well as Cole Hamels, Matt Cain, and Stephen Strasburg, among others. You’ll hear this a lot but it bears repeating: it’s still very early, so you can’t really trust the stats yet.
I went back to starters’ first three starts in 2012 and found some surprising ERA outliers as well, then I researched how they fared over the rest of the season. A small selection of elite hurlers:
(ERA-3 = ERA through three starts; ERA-RoS = rest-of-season ERA)
This exercise can be repeated for any group of players. Just to name a few on the hitting side: Matt Holliday had a .602 OPS after the first two weeks last year, but bounced back and posted a .908 OPS the rest of the way. Jay Bruce went from .679 in the first two weeks to .859 the rest of the way. Giancarlo Stanton went from .642 in the first two weeks to 1.010 through the end of the season.