Bob Costas is mortal, turns out

Longtime NBC Olympics host Bob Costas has been removed (temporarily) from his post in primetime due to an increasingly severe eye infection he sustained upon arrival in Sochi. "Today" host Matt Lauer took his place -- and did a fine job on his first night. It's the first time someone other than Costas has hosted a primetime Olympics broadcast (summer or winter) since 1998 in Nagano, Japan.
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