January 22, 2021
In the 2021 ZiPS projections that are live on this very website, Lucas Giolito is projected with the most WAR of any pitcher in baseball. If my social media is any indication, this projection is, so far at least, the source for the most joy and the most consternation. What is it about Chicago’s young ace that gives him such an aggressively optimistic projection?
One of the common complaints you see from readers about projections is that they don’t go out on a limb very often. To me, this makes perfect sense: when talking about the mean projections, massive performance changes should rarely be the player’s typical expectation. Think back on José Bautista back in 2010. At the time, Joey Bats was a player pushing 30 who had hit .238/.329/.400 in the majors in more than 2,000 plate appearances for five major league teams. As we now know, his destiny was to explode on the scene, slugging .617 for the Blue Jays, resulting in the first of his eventual six All-Star appearances. But that doesn’t mean that his baseline projection going into 2010 should have reflected that result; that unlikely things happen doesn’t mean that they weren’t unlikely.