Oklahoma slips past former Big 12 rival Missouri in NCAAs

Oklahoma forward Brady Manek, left, fights for a loose ball with Missouri forward Mitchell Smith, right, during the second half of a first-round game in the NCAA men's college basketball tournament at Lucas Oil Stadium, Saturday, March 20, 2021, in Indianapolis. (AP Photo/Darron Cummings)

Missouri forward Mitchell Smith (5) passes in front of Oklahoma forward Brady Manek, right, during the second half of a first-round game in the NCAA men's college basketball tournament at Lucas Oil Stadium, Saturday, March 20, 2021, in Indianapolis. (AP Photo/Darron Cummings)

Oklahoma guard Elijah Harkless (24) passes over Missouri guard Mark Smith (13) during the second half of a first-round game in the NCAA men's college basketball tournament at Lucas Oil Stadium, Saturday, March 20, 2021, in Indianapolis. (AP Photo/Darron Cummings)

Oklahoma forward Brady Manek celebrates after making a 3-point basket during the second half of a first-round game against Missouri in the NCAA men's college basketball tournament at Lucas Oil Stadium, Saturday, March 20, 2021, in Indianapolis. (AP Photo/Darron Cummings)

Missouri guard Drew Buggs reacts after fouling Oklahoma guard Elijah Harkless, rear, during the second half of a first-round game in the NCAA men's college basketball tournament at Lucas Oil Stadium, Saturday, March 20, 2021, in Indianapolis. (AP Photo/Darron Cummings)

Oklahoma guard Austin Reaves (12) drives to the basket over Missouri guard Javon Pickett (4) during the second half of a first-round game in the NCAA men's college basketball tournament at Lucas Oil Stadium, Saturday, March 20, 2021, in Indianapolis. (AP Photo/Darron Cummings)

Oklahoma players celebrate as Missouri forward Kobe Brown (24) walks off the court after a first-round game in the NCAA men's college basketball tournament at Lucas Oil Stadium, Saturday, March 20, 2021, in Indianapolis. Oklahoma won 72-68. (AP Photo/Darron Cummings)