Mike Tirico is replacing Bob Costas as NBC's primetime Olympics host, it was announced Thursday.
The former ESPN host, who joined NBC Sports last year, will take over starting with the 2018 Winter Games from PyeongChang.
Costas has served as the primetime host for a U.S. TV record of 11 games, every Olympics on NBC since 1992.
"It has been both a privilege and an incredible personal and professional experience to have been part of NBC's Olympic coverage all these years," said Costas, who has the longest tenure of NBC's sports announcers, with 37 years. "I'm especially appreciative of all the talented and dedicated people I worked for and with on those broadcasts. I always felt that, in a certain sense, I was carrying the ball for them. It's been a wonderful run, but I just felt now was the right time to step away and I'm grateful that NBC left that decision to me."
See photos of Bob Costas:
Bob Costas out and about
Bob Costas out and about
GLENDALE, AZ - SEPTEMBER 11: Sunday Night Football commentator Bob Costas sits on set before the NFL game between the New England Patriots and the Arizona Cardinals at University of Phoenix Stadium on September 11, 2016 in Glendale, Arizona. New England won 23-21. (Photo by Ethan Miller/Getty Images)
2016 SUMMER OLYMPIC GAMES -- Pictured: Bob Costas, Primetime Host -- (Photo by: Paul Drinkwater/NBC/NBCU Photo Bank via Getty Images)
LATE NIGHT WITH SETH MEYERS -- Episode 407 -- Pictured: Sportscaster Bob Costas during an interview on August 23, 2016 -- (Photo by: Lloyd Bishop/NBC/NBCU Photo Bank via Getty Images)
2016 SUMMER OLYMPIC GAMES -- Pictured: Bob Costas (center) poses with U.S. Gymnasts (l-r) Simone Biles and Aly Raisman on August 17, 2016 -- (Photo by: Paul Drinkwater/NBC/NBCU Photo Bank via Getty Images)
NEW YORK, NY - MAY 09: Sportscaster Bob Costas, Chris 'Mad Dog' Russo and Autism Speaks co-founder Bob Wright attend Lead Off For A Cure: Autism Speaks and Major League Baseball join forces at The Metropolitan Museum Of Art on May 9, 2016 in New York City. (Photo by Cindy Ord/Getty Images for Autism Speaks)
NEW YORK, NY - MAY 09: Bob Costas and Jill Sutton attend Lead Off For A Cure: Autism Speaks and Major League Baseball join forces at The Metropolitan Museum Of Art on May 9, 2016 in New York City. (Photo by Cindy Ord/Getty Images for Autism Speaks)
PHOENIX, AZ - JANUARY 16: Bob Costas announces for NBC before the Arizona Cardinals game against the Green Bay Packers at University of Phoenix Stadium on January 16, 2016 in Glendale, Arizona. The Cardinals defeated the Packers 26-20. (Photo by Rob Leiter via Getty Images)
GLENDALE, AZ - JANUARY 16: Bob Costas of NBC Sports talk before the NFC Divisional Playoff Game at University of Phoenix Stadium on January 16, 2016 in Glendale, Arizona. (Photo by Jennifer Stewart/Getty Images)
HOLLYWOOD, CA - NOVEMBER 10: Sportscaster Bob Costas and wife Jill Sutton arrive at the AFI FEST 2015 Presented By Audi Centerpiece Gala Premiere of Columbia Pictures' 'Concussion' at TCL Chinese Theatre on November 10, 2015 in Hollywood, California. (Photo by Gregg DeGuire/WireImage)
HOLLYWOOD, CA - NOVEMBER 10: (L-R) Actor Will Smith, Jill Sutton, Sportcaster Bob Costas and director/writer Peter Landesman attend the Centerpiece Gala Premiere of Columbia Pictures' 'Concussion' during AFI FEST 2015 presented by Audi at TCL Chinese Theatre on November 10, 2015 in Hollywood, California. (Photo by Kevin Winter/Getty Images for AFI)
HOUSTON, TX - DECEMBER 13: Television announcer Bob Costas watches the Houston Texans warm up before playing against the New England Patriots on December 13, 2015 at NRG Stadium in Houston, Texas. (Photo by Scott Halleran/Getty Images)
NEW YORK, NY - MAY 20: Bob Costas attends the Sports Business Awards 2015 at The New York Marriott Marquis on May 20, 2015 in New York City. (Photo by Grant Lamos IV/Getty Images)
NEW YORK, NY - APRIL 11: Bob Costas of NBC covers the Andy Lee Peter versus Quillin fight during the Premier Boxing Champions Middleweight bout at Barclays Center on April 11, 2015 in the Brooklyn borough of New York City. (Photo by Elsa/Getty Images)
THE TONIGHT SHOW STARRING JIMMY FALLON -- Episode 0200 -- Pictured: (l-r) Sportscaster Bob Costas during an interview with host Jimmy Fallon on January 22, 2015 -- (Photo by: Douglas Gorenstein/NBC/NBCU Photo Bank via Getty Images)
December 7, 2014: San Diego, California; USA; NBC Sports commentator Bob Costas during the NFL football game between the New England Patriots and the San Diego Chargers at Qualcomm Stadium. (Photo by Tom Walko/Icon Sportswire/Corbis via Getty Images)
NEW YORK, NY - OCTOBER 20: Sportscaster Bob Costas (L) and Creator of TV show 'Mad Men' Matthew Weiner attend the 24th Annual Broadcasting & Cable Hall Of Fame Awards at The Waldorf Astoria on October 20, 2014 in New York City. (Photo by Desiree Navarro/WireImage)
ARLINGTON, TX - SEPTEMBER 28: NBC Sports personality Bob Costas does the pregame broadcast from the sidline in the game between the Dallas Cowboys and the New Orleans Saints at AT&T Stadium on September 28, 2014 in Arlington, Texas. (Photo by Tom Pennington/Getty Images)
28 SEPTEMBER 2014: NBC Sports Cris Collinsworth and Bob Costas during a regular season NFL football game between the Dallas Cowboys and the New Orleans Saints at AT&T Stadium in Arlington, TX. (Photo by Ray Carlin/Icon Sportswire/Corbis via Getty Images)
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NBC Broadcasting and Sports chairman Mark Lazarus added, "For a quarter-century, Bob expertly piloted NBC's primetime coverage of the Olympics. It is with a tremendous amount of pride that I can simultaneously express our appreciation for Bob's stellar, record-setting run, while also feeling very lucky that we have someone as talented as Mike to take over as our new primetime host."
Tirico made his Olympics debut last summer as an NBC daytime host and 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," he said. "I am honored to call him a friend, humbled by this opportunity, and thankful to the many people who have helped make this possible."
NBC Olympics production and programming president Jim Bell added, "Bob Costas and the Olympics has been one of greatest pairings in sports broadcasting history, and there isn't anyone better suited to inherit his mantle than Mike Tirico, Mike's natural gifts as a broadcaster and passion for storytelling are just two reasons he is the perfect choice to host the biggest, most distinguished sports event in the world."
Costas will continue to have roles with NBC Sports and NBC News programs going forward. In his time at NBC, Tirico has served as host of NBC's Football Night in America, The Open, The Ryder Cup and Breeders' Cup horse racing. The former Monday Night Football fixture has also done play-by-play for NBC's Sunday and Thursday night football games and college football.
The PyeongChang Games are set to kick off on Feb. 9, 2018.