FOOTBALL PLAYERS at North Carolina made up more than a third of enrollments in suspect classes within a department the school investigated for academic fraud.

The school said Tuesday football players represented 246 of 686 enrollments (36 percent) in the 54 courses within the Department of African and Afro-American Studies between summer 2007 and summer 2011. Those classes lacked appropriate supervision and were called "aberrant" or were "taught irregularly" with limited contact between instructors and students, according to a university report released Friday.

Men's basketball players represented 23 enrollments, roughly 3 percent, during that span.

The school's investigation found fraud and poor oversight, including unauthorized grade changes and reports of grade rolls with what appear to be forged faculty signatures. The report found no evidence of favorable treatment for student-athletes or grades awarded without written work.

The News and Observer of Raleigh first reported the athlete enrollment figures Monday.

The probe was a result of an NCAA investigation into the football program. In one of the suspect classes, a former football player wrote a research paper that later led to accusations of plagiarism.

The report directed blame toward the former department chairman and a now-retired administrator. Julius Nyang'oro resigned as chairman last year and will retire in July.

In other college news:

* Texas A & M athletic director Bill Byrne retired.

Horse Racing * 

The Kentucky Derby's television viewership is up from last year. Saturday's race earned a 9.0 rating and 20 share on NBC. The network said Tuesday that was a 6 percent increase from 2011.

* Zenyatta is pregnant with her second foal at Lane End's Farm in Versailles, Ky. Zenyatta, a former horse of the year, won 19 of 20 career races before retiring in November 2010. She gave birth to a colt sired by Bernardini in March.

Philly File * 

Seattle defender

Leo Gonzalez

was suspended one game and fined by Major League Soccer for stomping on the leg of the Union's

Sheanon Williams

late in the Sounders' 1-0 win Saturday. Gonzalez stomped on the right leg of Williams after he slid to pass the ball upfield.

Sports Stops * 

Light-welterweight champion

Lamont Peterson

failed a drug test, putting a May 19 rematch in Las Vegas against former titleholder

Amir Khan

in doubt, a Nevada boxing official said. Peterson, 28, the current WBA (super) and IBF light welterweight champion, tested unacceptably high for synthetic testosterone in a urine test administered in March.

* Eight years later, the IOC will likely retest doping samples from the Athens Olympics to catch any drug cheats who may have avoided detection. With the frozen samples set to be destroyed this summer after 8 years in storage, IOC medical commission chairman Arne Ljungqvist said that the Olympic body is likely to retest some for substances that can now be detected - including insulin and human growth hormone.