Trying To Make Sense of Aaron Nola’s Slow Start

Over his first five starts, Aaron Nola is 0-5 with a 6.43 ERA. On Monday night against the Mets, Nola nearly put up his best performance of the season, allowing two earned runs over six innings before things went off the rails. In the seventh inning, the two runners that he bequeathed to the bullpen scored, leaving him with a final line of 6 1/3 innings and four earned runs. Still, it was an improvement.
No one has more losses or fewer wins than Nola this season. Only three qualified pitchers have a higher ERA. How much should we be panicking right now? I will tell you up front that I don’t know the answer. There’s plenty going on, and I don’t know how to make all the pieces fit neatly, so I’m just going to lay out what I’ve learned. Let’s start with a whole bunch of advanced ERA estimators. Read the rest of this entry »