This was the sequence of events: Wozzilroy breaks up, McIlroy wins in Europe, Wozniacki loses in Europe, McIlroy plays well in America, Wozniacki changes her Twitter profile picture, McIlroy plays terribly in America.
That's not really very interesting in itself, until you consider what Wozniacki changed her picture to. Here it is:
Here it is in its proper context:
After the change was made, Rory shot 43 on the back nine (his front nine), during his second round at the Memorial, which included three-straight double bogeys. That nine hole score was 12 shots worse than how he played the side Thursday, when he shot 63.
We're obviously not saying Wozniacki provided evidence that she had cast a spell on Rory or anything, and it's a basic logical fallacy to assume one had any effect on the other, but you have to admit: it's a little spooky.