Category Archives: Pitching

Who is Jack Kochanowicz?

Jack Kochanowicz bursted onto the scene at the end of 2024 for the Angels posting a 3.99 ERA, 104 ERA+, 1.19 WHIP, and 3.8% BB%. He came up as a high groundball pitcher with the occasional strikeout. In 2025 he sports a 5.53 ERA, 74 ERA+, 1.59 WHIP, and 10.4% BB%, all well below whatContinue reading “Who is Jack Kochanowicz?”

(R)Shiny AAA Pitch Data

I first made an RShiny app in graduate school when I first discovered it in a course I was taking. Simple, yet powerful applications. Of course, I used baseball data for fun outside of my assignments. The goal was to look at pitch data and break it down by location. I wanted to bring thatContinue reading “(R)Shiny AAA Pitch Data”

Whiff-le Ball (Part 1: Analytics)

Everyone loves the whiff (also known as swinging strikes). Coaches, front offices, scouts, agents. Pitchers that don’t have good numbers on the surface but a high whiff % continue to get opportunities in MLB. Why? Well whiffs are an indicator of success for pitchers, especially relievers. If the bases are loaded with no outs, we’dContinue reading “Whiff-le Ball (Part 1: Analytics)”

Clustering Starting Pitchers

My favorite machine learning algorithms are unsupervised clustering. I think there is elegance in finding patterns in data that we don’t know about. Clustering is grouping similar data together in a data set when the groupings are unknown. This is based on how far away data points are from other groups and how close theyContinue reading “Clustering Starting Pitchers”