Wei-Yin Chen gave up two runs in just 5.1 innings Tuesday against the Mariners. The next 12.2 innings all belonged to the Baltimore bullpen. Their response? Six hits, four walks, 16 strikeouts and zero runs, with all but one of those 12.2 innings requiring a shutout just to keep the game going.
As a result, Steve Johnson, Darren O’Day, Tommy Hunter, Jake Arrieta, Pedro Strop, Jim Johnson and Brian Matusz combined for a massive 1.170 WPA on the game. The Orioles bullpen now owns a 12.51 WPA for the whole season, with yesterday’s performance enough to push them over the 1984 Tigers for the highest season bullpen WPA since our reports carry the data (back to 1974). Judging by the historical data, this Orioles bullpen has been the most influential in recent major league history.