Jordan Phillips #80 of the Oklahoma Sooners rushes against Christian Lombard #74 of the Notre Dame Fighting Irish at Notre Dame Stadium on September 28, 2013 in South Bend, Indiana.
NORMAN, Okla. - Oklahoma starting nose tackle Jordan Phillips likely is out for the season with a back injury.
Stoops said during his weekly press conference that Phillips will undergo surgery on Tuesday.
Stoops also said that linebacker Corey Nelson, who tore a pectoral muscle on Oct. 5 against TCU, also will have surgery Tuesday. Nelson already had been ruled out for the season.
Phillips, a 6-foot-6, 324-pound redshirt sophomore, didn't play against TCU or on Saturday against Texas due to back problems.
He started the first four games for No. 18 Oklahoma and had been a pleasant surprise for the Sooners, recording seven tackles, including two for loss, and one sack.
Redshirt freshman Jordan Wade started against TCU and Texas in Phillips' absence.