Question: What is the name of this college football game help by the Big 12 Conference, in which Colorado played for the second time and lost to Oklahoma in 2002?

Context paragraphs:
Big 12 Conference Softball Tournament: The Big 12 Softball Tournament (sometimes known simply as the Big 12 Championship) was the conference championship tournament in college softball for the Big 12 Conference (Big 12).  Since its inception in 1996, the tournament was played at ASA Hall of Fame Stadium in Oklahoma City, Oklahoma.  The winner received the conference's automatic bid to the NCAA Division I Softball Tournament.  The Big 12 stopped holding a postseason conference tournament after the 2010 competition.  In 2017, the Big 12 Conference stated that they would be holding a tournament starting in 2017.  The tournament will still be hosted at ASA Hall of Fame Stadium in Oklahoma City.

2002 Colorado Buffaloes football team: The 2002 Colorado Buffaloes football team represented the University of Colorado at Boulder during the 2002 NCAA Division I-A football season.  The team played their home games at Folsom Field in Boulder, Colorado.  They participated in the Big 12 Conference in the North Division.  They were coached by head coach Gary Barnett.  Colorado played in the Big 12 Championship Game for the second time, but lost to Oklahoma.

List of Colorado Buffaloes head football coaches: The Colorado Buffaloes football program represents the University of Colorado Boulder in the Pac-12 Conference South Division of the National Collegiate Athletic Association.  The team has had 25 head coaches since it started playing organized football in 1890.  The university adopted the nickname "Buffaloes" in 1934 after previously being known as the "Silver and Gold", "Silver Helmets", "Yellow Jackets", "Hornets", "Arapahoes", "Big Horns", "Grizzlies" and "Frontiersmen".  Colorado played without a head coach during their first four years.  The team first joined a conference in 1893 when they became a member of the Colorado Football Association.  They joined the Colorado Faculty Athletic Conference in 1909, immediately followed by the Rocky Mountain Athletic Conference in 1910.  Before the 1938 season, Colorado joined the Mountain States (Skyline) Conference.  They joined the Big Seven Conference in 1948, which was renamed the Big Eight Conference in 1958 when Oklahoma State joined/rejoined the Conference.  The Buffaloes became a charter member of the Big 12 in 1996 when the Big Eight disbanded.  The Buffaloes have played in 1,139 games during their 120 seasons.  In those seasons, nine coaches have led Colorado to postseason bowl games: Bunny Oakes, Dallas Ward, Bud Davis, Eddie Crowder, Bill Mallory, Bill McCartney, Rick Neuheisel, Gary Barnett, and Dan Hawkins.  Nine coaches have won conference championships with the Buffaloes: Fred Folsom, Myron Witham, William Saunders, Oakes, Jim Yeager, Sonny Grandelius, Mallory, McCartney, and Barnett.

2001 Colorado Buffaloes football team: The 2001 Colorado Buffaloes football team represented the University of Colorado at Boulder during the 2001 NCAA Division I-A football season.  The team played their home games at Folsom Field in Boulder, Colorado.  They participated in the Big 12 Conference in the North Division.  They were coached by head coach Gary Barnett.  Colorado played in the Big 12 Championship Game for the first time and secured its first BCS bowl berth.

2016 Alamo Bowl (December): The 2016 Alamo Bowl was a postseason college football bowl game, played on December 29, 2016 at the Alamodome in San Antonio, Texas.  The game featured the Oklahoma State Cowboys, of the Big 12 Conference, and the Colorado Buffaloes, of the Pac-12 Conference.  It was the two teams' first meeting since 2009 and the first since Colorado's departure from the Big 12 Conference in 2011.  The game was the 24th edition of the Alamo Bowl and was sponsored by the San Antonio-based company, Valero Energy.

2005 Colorado Buffaloes football team: The 2005 Colorado Buffaloes football team represented the University of Colorado at Boulder in the 2005 NCAA Division I-A football season.  The previous year's team won the Big 12 North Conference.  That marked the third Big 12 North championship for the Buffaloes in four years.  The team had expectations to improve on their winning and appeared to be on the right track with a 7–2 record to begin the season.  But in the end, head coach Gary Barnett had his contract bought out and Colorado suffered four straight losses including an embarrassing 70–3 loss to Texas in the Big 12 Championship Game.  They finished the season 7–6.  In the 2005 Champs Sports Bowl against Clemson, Mike Hankwitz acted as interim head coach, even though Dan Hawkins had been hired as the new head coach.  Hawkins coached his final game with Boise State in the game the day after Colorado played.

2010 Colorado Buffaloes football team: The 2010 Colorado Buffaloes football team represented the University of Colorado in the 2010 NCAA Division I FBS football season.  The team was coached by fifth-year head coach Dan Hawkins for the first nine games and interim head coach Brian Cabral for the final three games.  Colorado played their homes game at Folsom Field.  It was also the final season as members the Big 12 Conference in the North Division for Colorado, before joining the Pac-12 Conference for the 2011 season.  The Buffaloes failed to qualify for a bowl game, as they finished the season 5–7, 2–6 in Big 12 play.

2003 Big 12 Championship Game: The 2003 Big 12 Football Championship Game was played on December 6, 2003 in Arrowhead Stadium in Kansas City, Missouri.  The game determined the 2003 football champion of the Big 12 Conference.  The Oklahoma Sooners, winners of the South division of the Big 12, were upset by the Kansas State Wildcats, who won the North division, by a score of 35–7.  This was the second time the two teams met in the Big 12 Championship Game.  The first was the 2000 Big 12 Championship Game, a game in which Oklahoma won 27-24.

Nebraska–Oklahoma football rivalry: The Nebraska–Oklahoma football rivalry was an American college football rivalry between the Nebraska Cornhuskers football team of the University of Nebraska and Oklahoma Sooners football team of the University of Oklahoma.  The rivalry continued in the Big 12 Conference until 2010, though the rivalry was more prominent when both teams were members of the former Big Eight Conference before 1996.  The annual rivalry effectively ended when Oklahoma was lined up in the Southern division of the newly formed Big 12 to maintain its rivalry with Texas and also its recruiting hotbeds in Texas.  As both teams won their respective divisions in 2010, they met in the 2010 Big 12 Championship Game.  Following the 2010 season, Nebraska left the Big 12 for the Big Ten Conference.  As a result, the 2009 meeting turned out to be the last regular-season scheduled meeting.  Nebraska's departure left the future of the rivalry in doubt.  The two teams have agreed to play a home-and-home non-conference series scheduled for 2021 in Norman (to celebrate the 50th anniversary of the 1971 classic) and 2022 in Lincoln.  They added games in 2029 and 2030 as well.

Big 12 Championship Game: The Big 12 Championship Game is a college football game held by the Big 12 Conference.  The game was played each year since the conference's formation in 1996 until 2010 and will return starting with the 2017 season.  From 1996 to 2010 the championship game pitted the Big 12 North Division champion against the South Division champion in a game held after the regular season was completed.  From 2017 onward, the game will feature the two teams with the best records within the conference.

Supporting paragraphs: 2002 Colorado Buffaloes football team Big 12 Championship Game
Answer: Big 12 Championship Game