I don't know. Seems as good of a curse as any. But here are Darren O'Day's three previous seasons:
Which one looks like the anomaly? It's always tricky to say with relievers -- they're always going to be at the mercy of sample size -- but it sure looked like O'Day was a quality reliever until 2011. He went down to Round Rock and did really well after getting blown up in the majors. And then, before the 2012 season, he was unceremoniously waived.
The Orioles picked him up. Here's how he did:
And against the Rangers in the first A.L. Wild-Card game? He threw two innings, allowing only an infield hit. Everyone's worried about Josh Hamilton kicking the ball around against the A's and not hitting in general ... because that's kind of important ... but don't forget the Curse of Darren O'Day.
And Josh Hamilton, too. It's probably a good idea to focus on that. He struck out with a runner on second, in what could be his final at-bat as a Texas Ranger. There were boos.