NBC's Bob Costas being replaced by Mike Tirico at Olympics
- NEW YORK (AP)
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Mike Tirico is taking over from Bob Costas as the prime-time host of NBC's Olympics coverage starting next winter in South Korea.
Costas, who has been the on-air concierge to NBC's Olympics 11 times starting in 1992, said he decided on his own a year ago that the time was right for a...