Amazon.com: 2021 Topps #239 Ian Anderson Atlanta Braves Rookie Baseball Card  : Collectibles & Fine Art

Well, if you told me that Ian Anderson, after giving up only 3 ER in 22 postseason IP in 2021, would find himself in AAA for a big chunk of the year and lose his rotation spot, I would say there was probably an injury. However, no one really seems to know exactly what happened to Ian Anderson last year. All we know is that’s not the Ian Anderson we thought he would be blossoming into.

If you look a little closer, Anderson’s struggles weren’t that unpredictable. Ian outperformed his FIP by a wide margin in his first full season in 2021. His 4.12 FIP looked a whole lot worse than the 3.58 ERA suggested he was. If you can believe it, his FIP in 2022 (4.25) wasn’t that far off. But instead of outperforming his FIP, he badly underperformed it, and he finished with a 5.00 ERA for the year. So one could conceivably chalk this up to a sophomore slump and a whole lot of bad luck. For his career, his FIP and ERA are nearly identical now (3.99 and 3.97, respectively).

There were a few indicators on the pitch data side that says that maybe something was up. He lost a little over a half MPH off of his fastball (94.0 down from 94.6 in 2021). His whiff rate on said fastball was down a little bit too (18.1% down from 21.1 in 2021). His walks, never a strength for him, got even worse (11.0% up from 9.9% the year previous).

Did he forget how to pitch? Maybe. Was he a 24-year old who just had the most grueling season of his life pitching well into November for the first time, lost a few ticks off his fastball, maybe felt the fatigue of being a rotation anchor, and his FIP didn’t bail him out (in fact, turned on him)? I think that’s more likely.

Ian will go into 2023 with more than enough opportunity to make it back into the rotation. Problem is, behind Max Fried, Kyle Wright, Spencer Strider, and Charlie Morton, there is only one spot available. And Mike Soroka also has his eye on that one, and Bryce Elder, no slouch himself, will also be tough competition for it. It’s great for Atlanta that we have two great rebound candidates (plus Elder) for one spot, so that should give fans confidence. And these things tend to sort themselves out. Very rarely do you really have the pitching surplus you think you do, and watch Soroka, Anderson, Elder, and maybe even others get plenty of starts this year.

Hopefully 2023 will be the step forward for Ian that we thought 2022 was going to be.