Mike Tirico is taking over for Bob Costas as NBC's Olympics host
NBC’s longtime Olympics host Bob Costas is handing the torch to Mike Tirico for the 2018 Winter Games, the network announced Thursday.
Tirico will debut as the prime-time host for the network with the 2018 games in Pyeongchang, South Korea, ending a run for Costas that began in 1992.
Costas, 64,...