Defensive back De'Vante Harris appeared to be among the most solid of Oklahoma's commitments.
He was one of the most vocal recruiters for the Sooners since making his own choice last spring.
But Saturday, on Twitter, Harris announced he was no longer an OU commit.
“Just decommitted from the University of Oklahoma,” Harris tweeted at about 2 p.m. Saturday.
Earlier in the week another OU commit, Durron Neal, had his Twitter account hacked and some wondered whether the same had happened to Harris.
But shortly afterward, Harris had a friendly exchange with Sooners safety Tony Jefferson.
Jefferson also tweeted: “Idk if there's coaches changes or not at OU. But I wish they would tell the players. We would like to kno too! Haha.”
Sooners secondary coach Willie Martinez is reportedly a candidate for defensive coordinator openings at Kansas and Illinois.
While Harris was the Sooners' top defensive commitment, they have received a pair of pledges from defensive backs lately, in juco signee Kass Everett and in-state product Kevin Peterson.
Everett initially signed with Texas Tech but had a change of heart before filing his paperwork and signed with the Sooners.
TAPPER EXPECTS TO QUALIFY
Maryland high school defensive end Charles Tapper, who has been committed to the Sooners since October, hasn't been one of the more vocal OU commitments.
He recently spoke with Rivals affiliate MDHigh.com, though, touching on his academic status.
Tapper had work to do in the classroom as a senior to be able to qualify academically.
“I worked hard and got my grades up this quarter,” Tapper told the site. “I should be good to go with my GPA and SATs. I think I'm going to qualify.”
SOONERS HOPING FOR LATE PUSH
With several spots still left to fill, especially after Harris' decision, the Sooners are making a late recruiting push that includes expected visits from several highly ranked players before the opening of the signing period Feb. 1.
Akeel Lynch, a running back from Athol Springs, N.Y. is one of two Boston College commits who is expected to take a late visit to Norman. Lynch (6-0, 205) was offered by the Sooners earlier in the week. Tight end Sam Grant, another BC commit, was expected to be in Norman over the weekend for a visit.
Other players expected to visit OU in January include defensive back Brandon Beaver from Compton, Calif., juco wide receiver Courtney Gardner, an Arkansas commit, uncommitted running back Damien Williams and South Florida commit Sean Price, a tight end.
Former OU target Brian Nance, a high school teammate of former OU commit Polo Manukainiu, committed to Baylor during Saturday's U.S. Army All-American Bowl. ... Quarterback commit Trevor Knight, who had hoped to enroll this month, isn't expected to be on campus this semester. ... Wide receiver commit Trey Metoyer, who was part of last year's signing class before spending a semester at Hargrave Military, remained at No. 1 on the most recent Rivals.com list of the nation's top prep school products.