It was devastating when we all learned that Mariano Rivera had sustained a torn ACL shagging fly balls during batting practice. It made us feel better when Rivera declared that he would be back, but still, we've got now through October to watch baseball without Mariano Rivera. It's going to be weird.

After we learned of the extent of Rivera's injuries, we also learned that he'd run into "complications". Unspecified complications, which can make for worrisome complications. Nobody would say what was up, but now we know:

Mariano's issue was a blood clot in his leg. Calf area.

— Kevin Kernan (@NYPost_Kernan) May 9, 2012

I believe it is taken care of already he said of the clot

— Kevin Kernan (@NYPost_Kernan) May 9, 2012

So Mariano Rivera had a blood clot in his leg. Or he still has a blood clot in his leg. But it's getting treated, and it won't set him back. It's a complication, but it's a minor one, which is good news for everyone involved. I mean, it's not good news that Mariano Rivera had a blood clot, but it's good news that the blood clot can be easily dealt with.