Starters Are Pitching in Relief More Often This Postseason

The narrative of this postseason has been the ubiquity of the reliever, the increased tendency of teams to use their bullpens early and often. To a certain extent, that narrative is grounded in reality. We saw it right away in the American League Wild Card Game, for example, when the Yankees’ Luis Severino recorded only a single out and then a quartet of New York relievers pitched what was essentially an impromptu bullpen game. Combine that with the paltry two innings that Ervin Santana procured for the Twins and just 13.5% of the innings in that game were completed by starting pitchers.
The next night played out similarly, as Jon Gray and Zack Greinke survived just five half-innings between them, or 29.4% of the game’s total.
So, yes, relief pitchers have played a major role in the postseason. The use of bullpens, however, might not represent the greatest break from tradition. To quote a powerful sorcerer, things aren’t always what they seem.

