Title: List of Oklahoma Sooners football seasons
Content:  The Oklahoma Sooners college football team competes in the National Collegiate Athletic Association (NCAA) Division I Football Bowl Subdivision, representing the University of Oklahoma in the Big 12 Conference. The Sooners have played their home games at Oklahoma Memorial Stadium in Norman, Oklahoma since 1923. The Sooners claim seven national championships. They have also recorded 50 total conference championships, twelve undefeated, untied seasons, and the longest winning streak in Division I FBS history with 47 straight victories. The Oklahoma football program is one of the most successful programs in history, with 598 wins and a winning percentage of .764 since the end of World War II, 
Title: Oklahoma Sooners football
Content:  linebacker Torrance Marshall. The team defeated the Kansas State Wildcats for the second time that season in the Big 12 Championship, a victory which propelled the program to its first national title berth since 1985. The Sooners finished the season with a stunning 13–2 win over a heavily favored Florida State team in the Orange Bowl and claimed the Sears Trophy. At the end of the season, quarterback Josh Heupel had the top two spots on the list of Oklahoma's season passing records. The championship was the Sooners' 7th national title and their first since Barry Switzer's departure. The team had finally regained its status as a power in the college 
Title: 2001 Orange Bowl
Content:  Oklahoma entered the National Championship game with a 11–0 record, having won all 8 of their Big 12 Conference regular season games, followed by a win over Kansas State in the Big 12 Championship Game. This was Oklahoma's first BCS National Championship game appearance.
Title: University of Oklahoma
Content:  Vessels in 1952, Steve Owens in 1969, Billy Sims in 1978, Jason White in 2003, Sam Bradford in 2008, Baker Mayfield in 2017, and Kyler Murray in 2018. Many Pro Football Hall of Famers, including Lee Roy Selmon and Troy Aikman, also attended the University of Oklahoma. In 1988, OU became the first school to participate in both the football and basketball national championships in the same year, an achievement unequaled until the 2006 season, when Ohio State and the University of Florida were both in each, with Florida winning both games. Oklahoma also currently holds the record for the 
Title: Notre Dame Fighting Irish
Content:  the Fighting Irish on November 9, 1957. Incidentally, Oklahoma's 28–21 loss to Notre Dame to open the 1953 season was the last loss before the beginning of the streak. In 2012, Oklahoma (at the time 6-1) was favored to defeat Notre Dame (at the time 9-0) by 18 points. Notre Dame ending up winning 30–13 thanks to LB Manti T'eo's game clinching interception late in the 4th quarter, Notre Dame's stellar defense, and a bad snap in the first quarter by Oklahoma's center that sent them back to the 14-yard line. Thanks to the win by Notre Dame, the rivalry has been renewed. The last time Notre Dame reached the National Championship was in 2012 where they suffered a 42–14 loss to Alabama.
Title: Oklahoma Sooners football
Content:  Notre Dame Fighting Irish, though they did not play in a bowl game. The following year, Wilkinson went on to guide the Sooners to their first national championship, though they lost in the Sugar Bowl to Bear Bryant's Kentucky team. That loss was the Sooners' first loss since a season opener loss to Santa Clara in 1948, 31 games earlier. It was in 1951, while seeking funding to improve the university, that OU president George Lynn Cross said to the Oklahoma legislature that he "would like to build a university of which the football team would be proud." In 1952, 
Title: List of Oklahoma Sooners football seasons
Content:  of 13 consecutive conference championships (in addition to one by his predecessor). Oklahoma continued to perform well after Wilkinson left, but only returned to the national title picture following the hiring of Barry Switzer in 1973. Switzer began similarly to Wilkinson, with eight consecutive conference championships in addition to national championships in 1974 and 1975. Switzer added Oklahoma's sixth national championship in 1985. After a decline that lasted more than a decade, Oklahoma again won the national championship in 2000, after coach Bob Stoops had been hired the previous year. By then Oklahoma had joined a new conference, the Big 12 conference, a combination of 
Title: Oklahoma Sooners football
Content:  The Oklahoma Sooners football program is a college football team that represents the University of Oklahoma (variously "Oklahoma" or "OU"). The team is a member of the Big 12 Conference, which is in Division I Football Bowl Subdivision (formerly Division I-A) of the National Collegiate Athletic Association (NCAA). The program began in 1895 and is one of the most successful programs since World War II with the most wins (606) and the highest winning percentage (.762) since 1945. The program claims 7 national championships, 50 conference championships, 162 First Team All-Americans (80 consensus), and seven Heisman Trophy winners. In addition, the school has had 23 members (five coaches and 18 players) inducted into the College Football Hall of Fame and holds the record for the longest winning streak in Division I history with 47 straight victories. Oklahoma is also the only program that has had four coaches 
Title: 2000 Oklahoma Sooners football team
Content:  State Wildcats in the Big 12 Championship Game on December 2. The Sooners finished the regular season 12–0 (9–0 in Big 12, including conference championship game), while winning their first Big 12 title and their 37th conference title overall. They were invited to the 2001 Orange Bowl, which served as the BCS National Championship Game that year, where they beat the Florida State Seminoles by a score of 13-2. This is Oklahoma's seventh claimed and most recent national championship. Following the season, Torrance Marshall was selected in the third round of the 2001 NFL Draft, along with Josh Heupel in the sixth.
Title: 1988 Orange Bowl
Content:  The 1988 Orange Bowl featured "Game of the Century"-type billing as the undefeated and top-ranked Oklahoma Sooners faced off against undefeated and second-ranked Miami for the national championship. Adding to the hype was the recent on-field history between the teams. Oklahoma was a dominant force in college football, winning the national championship in 1985 and losing just one game in each of the preceding two years. Miami, though, had proven to be the thorn in Oklahoma's side, as the Sooners' losses in '85 and '86 had both come at the hands of Miami. Now, with the national championship on the line, Miami sought 

Question: when was the last time oklahoma won a national championship in football?
Answer: 2003.
2000.