Bob Costas has a nasty eye infection and instead of getting better it seems to be getting worse. To give Costas' eyes a break, Matt Lauer will fill in for him tonight, according to Brian Stelter.
When the Olympics began, Costas had an infection in just one of his eyes, but on Monday night, it was worse and had spread to his other eye. Here he was last week when pre-Olympics coverage began. His left eye is red and infected but his right eye seems fine:
