Intentional-Walk Immunity, Featuring the Blue Jays
If aliens landed on Earth and, rather than asking about our political systems or scientific accomplishments, inquired about the last 20 years of baseball philosophy, one of the things you would highlight is the growing disdain for the intentional walk. Certainly, there are times when an intentional walk makes sense, but one of the fundamental lessons of the era is that giving the other team a free base runner is typically foolish.
As Ben Lindbergh wrote at FiveThirtyEight, managers are increasingly aware of the downside of the intentional walk, and as a result, they’re are on the decline across the league. Billy Beane didn’t wake up one morning, discover intentional walks were bad, and begin a crusade against them or anything, but intentional walks have clearly fallen out of favor as teams, writers, and fans have gotten on board with a more data-friendly approach to the game.
As such, we’ve trained ourselves to see intentional walks negatively by default and praise teams that don’t issue them. If teams are issuing fewer intentional walks, we normally see that as a positive sign, so forgive me for the investigation I’m about to undertake to explore the opposite. In 2015, the Blue Jays both (a) possessed an exceptional offense and yet (b) were on the receiving end of a shockingly low number of intentional walks. What was the rest of the league thinking?


