Question: Which head coach of these two teams--Alabama Crimson Tide and Oklahoma Sooners--had the longest time with their team during the 2013 football season?
Context: Alabama Crimson Tide football under Nick Saban covers the history of the Alabama Crimson Tide football team during the period from when Nick Saban was hired as head coach in 2007 through the present.  Under Saban, Alabama plays as part of the National Collegiate Athletic Association (NCAA) Football Bowl Subdivision (FBS), and is a member of the West Division of the Southeastern Conference (SEC).  The Crimson Tide plays its home games at Bryant–Denny Stadium in Tuscaloosa, Alabama.  During the nine years Saban has served as head football coach, Alabama has compiled an overall official record of 101–18 ( ) (106–18 on the field), seven bowl game appearances with five victories, a share of five SEC Western Division titles, four SEC championships, and four national championships.  Since 2008, Saban's teams have spent all or part of each season ranked number 1 in national polls. The 2013 Alabama Crimson Tide football team (variously "Alabama", "UA", "Bama" or "The Tide") represented the University of Alabama in the 2013 NCAA Division I FBS football season.  It was the Crimson Tide's 119th overall season, 80th as a member of the Southeastern Conference (SEC) and its 22nd within the SEC Western Division.  The team was led by head coach Nick Saban, in his seventh year, and played its home games at Bryant–Denny Stadium in Tuscaloosa, Alabama.  They finished the season with a record of eleven wins and two losses (11–2 overall, 7–1 in the SEC) and with a loss in the 2014 Sugar Bowl to Oklahoma. The 2013 Oklahoma Sooners football team represented the University of Oklahoma in the 2013 NCAA Division I FBS football season, the 119th season of Sooner football.  The team was led by two-time Walter Camp Coach of the Year Award winner, Bob Stoops, in his 15th season as head coach.  They played their home games at Gaylord Family Oklahoma Memorial Stadium in Norman, Oklahoma.  They were a charter member of the Big 12 Conference. The Alabama Crimson Tide softball team represents the University of Alabama in NCAA Division I college softball.  The team participates in the Western Division of the Southeastern Conference (SEC).  It is currently led by head coach Patrick Murphy and assistant coaches Alyson Habetz and Stephanie VanBrakle.  The team plays its home games at the Rhoads Stadium located on the university's campus.  The Alabama Crimson Tide softball team won its first National Championship in 2012, after they defeated the Oklahoma Sooners in the championship series of the Women's College World Series. The 1964 Alabama Crimson Tide football team (variously "Alabama", "UA" or "Bama") represented the University of Alabama in the 1964 college football season.  It was the Crimson Tide's 70th overall and 31st season as a member of the Southeastern Conference (SEC).  The team was led by head coach Bear Bryant, in his seventh year, and played their home games at Denny Stadium in Tuscaloosa, Legion Field in Birmingham and Ladd Stadium in Mobile, Alabama.  They finished season with ten wins and one loss (10–1 overall, 8–0 in the SEC), as SEC champions and with a loss to Texas in the Orange Bowl.  As the major wire services at that time awarded their national champions prior to the start of bowl season, Alabama was also recognized as national champions by the AP and UPI before their loss to Texas.  After the bowl games, the Football Writers Association of America as stated in 1964 college football season named the undefeated Arkansas Razorbacks as the national champions.  The Razorbacks defeated Texas during the regular season. The 1961 Alabama Crimson Tide football team (variously "Alabama", "UA" or "Bama") represented the University of Alabama in the 1961 college football season.  It was the Crimson Tide's 67th overall and 28th season as a member of the Southeastern Conference (SEC).  The team was led by head coach Bear Bryant, in his fourth year, and played their home games at Denny Stadium in Tuscaloosa, Legion Field in Birmingham and Ladd Stadium in Mobile, Alabama.  They finished season undefeated with eleven wins (11–0 overall, 7–0 in the SEC), with a victory over Arkansas in the Sugar Bowl and as consensus national champions.  The 1961 national championship was the first of the six that Bear Bryant would win as head coach of the Crimson Tide. The 1984 Alabama Crimson Tide football team (variously "Alabama", "UA", "Bama" or "The Tide") represented the University of Alabama in the 1984 NCAA Division I-A football season.  It was the Crimson Tide's 92nd overall and 51st season as a member of the Southeastern Conference (SEC).  The team was led by head coach Ray Perkins, in his second year, and played their home games at both Bryant–Denny Stadium in Tuscaloosa and Legion Field in Birmingham, Alabama.  They finished the season with a record of five wins and six losses (5–6 overall, 2–4 in the SEC).  This marked Alabama's first losing season since the Tide went 2–7–1 in 1957 under Jennings B. Whitworth, and ended Alabama's streak of 25 consecutive bowl appearances. The 1983 Alabama Crimson Tide football team (variously "Alabama", "UA", "Bama" or "The Tide") represented the University of Alabama in the 1983 NCAA Division I-A football season.  It was the Crimson Tide's 91st overall and 50th season as a member of the Southeastern Conference (SEC).  The team was led by head coach Ray Perkins, in his first year, and played their home games at both Bryant–Denny Stadium in Tuscaloosa and Legion Field in Birmingham, Alabama.  They finished the season with a record of eight wins and four losses (8–4 overall, 4–2 in the SEC).  Ray Perkins, who played as a wide receiver for Bear Bryant in the 1960s, was named as the new head coach at Alabama on December 14, 1982, to succeed Bryant after his 25-year tenure as Alabama's head coach. The 1979 Alabama Crimson Tide football team (variously "Alabama", "UA" or "Bama") represented the University of Alabama in the 1979 NCAA Division I-A football season.  It was the Crimson Tide's 85th overall and 46th season as a member of the Southeastern Conference (SEC).  The team was led by head coach Bear Bryant, in his 22nd year, and played their home games at Bryant–Denny Stadium in Tuscaloosa and Legion Field in Birmingham, Alabama.  They finished the season undefeated (12–0 overall, 6–0 in the SEC) and with a victory over Arkansas in the Sugar Bowl.  For their collective efforts, the Crimson Tide were recognized as consensus national champions for the 1979 season. The 1958 Alabama Crimson Tide football team (variously "Alabama", "UA" or "Bama") represented the University of Alabama in the 1958 college football season.  It was the Crimson Tide's 64th overall and 25th season as a member of the Southeastern Conference (SEC).  The team was led by head coach Bear Bryant, in his first year, and played their home games at Denny Stadium in Tuscaloosa, Legion Field in Birmingham and at Ladd Stadium in Mobile, Alabama.  They finished with a record of five wins, four losses and one tie (5–4–1 overall, 3–4–1 in the SEC).  As they finished the season above .500, Alabama secured its first winning season since 1953, and their five victories gave Bryant more wins games in one season than former head coach Jennings B. Whitworth did in previous three.
Answer: Bob Stoops