Bob Costas will serve as host for NBC's prime-time and late-night coverage of the 2014 Sochi Winter Olympic Games.
Costas has been prime-time host for every NBC-covered Olympic Games since 1992, including the 2012 London Games, which was the most-watched TV event in U.S. history with more than 217 million viewers.
With his 2014 assignment, Costas becomes U.S. television's first 10-time Olympic prime-time host. Jim McKay hosted the Olympics eight times for ABC.
This will be the second time that Costas has hosted both the prime-time and late-night Olympic coverage.