This post should be prefaced with an important note: David Robertson is not having a bad year. He opened the season by giving up a grand slam to Justin Smoak, which immediately ballooned his ERA. He also struggled through a sub-par May (when he posted a 5.56 ERA), but has responded by posting a 2.08 ERA since, including an opponents’ slugging percentage of just .318.
Still, Robertson has shown some troubling flashes that Yankees fans aren’t used to seeing out of him. He returned to the Bronx prior to the trade deadline last season and gave the Yanks a reminder of what they had been missing for the past three seasons, including a number of clutch performances in October.