Last month, I went through pitchers who had improved their projections the most since the start of the season. It was May 5th, so we were looking at close to a months worth of games. To revisit the methodology, I wanted to look at pitchers who had improved their projections the most from the start of the season, while also examining their underlying skills. What I specifically was considering was pitchers who were inducing less contact in the zone – the area where batters are more likely to make contact – while also seeing if they were throwing in the zone more or less than they had previously. I was using zone contact rate in conjunction with frequency of pitches in the zone as a proxy for improved stuff. Of these two variables, improvement zone-contact rate being the more important.
Over the first month, this list would have been small: Chris Sale, Danny Salazar, Jeff Samardzija, Gerrit Cole, Lance McCullers, Michael Pineda, and Ivan Nova were the only starters who improved in both capacities. If we expanded the bounds on zone frequency, we would add Jacob deGrom, James Paxton, Zack Greinke, Taijuan Walker, and Carlos Martinez to the list. Not a bad list of pitchers if you’re trying to look for SP who are on everyone’s radar, but also could be showing real improvements in 2017.
Today, I want to revisit this exercise. However, I will only be looking at improvements over the last month. Over the last month, here are all SP who have improved their Ottoneu FGpts projections by more than .05 points per inning. (If you don’t play Ottoneu, this should be generalize enough to help you in standard leagues). Read the rest of this entry »