Bob Costas Steps Down as NBC's Olympics Host
After hosting coverage a record 11 Olympics, Costas will pass the torch to Mike Tirico, who will make his debut at the PyeongChang Olympics in 2018, NBC announced Thursday.
Tirico joined NBC Sports in July 2016 and made his Olympics debut that summer as one of NBC's daytime Olympics hosts, as well as the host of the Rio closing ceremony.
"The level and longevity of Bob's tenure have left an indelible mark on American television and the Olympic Games," said Tirico.