An East Coast autograph broker told ESPN on Tuesday that he paid Texas A&M quarterback Johnny Manziel $7,500 for autographs.

The broker also provided cellphone videos that showed Manziel signing autographs but not accepting any money. He said the signings took place last January in New Haven, Conn.

The NCAA has been investigating whether Manziel accepted money for signing autographs, which would be a violation that could lead to the quarterback being ruled ineligible.

ESPN said the videos of Manziel were recorded without his knowledge. Manziel reportedly is heard on the tape saying, "You never did a signing with me."

The broker, according to ESPN, originally asked for payment to release the videos. He also said he would not cooperate with the NCAA investigation.

ESPN previously reported that two sources said the Heisman Trophy winner agreed to sign memorabilia in exchange for a five-figure fee.

  • USC receiver Marqise Lee says he wasn't paid for autographing photos while in Miami last winter for the BCS title game. Lee and USC's administration issued statements emphatically denying any wrongdoing by last season's Biletnikoff Award winner as the nation's top receiver.

    Lee says he signed several photos last January for somebody he thought was a fan and collector. The photos have since been offered for sale online.

    Miscellany

    Three-time NASCAR champion Tony Stewart broke his right leg Monday night at Southern Iowa Speedway in Oskaloosa, where he flipped his 360 winged sprint car while leading with five laps remaining in the 30-lap feature. He had surgery Tuesday on the upper and lower parts of his leg, and Stewart-Haas Racing said he'll need a second surgery.

    He remained hospitalized, and there was no timetable for his return to racing. Max Papis was tabbed to replace Stewart this weekend in the No. 14 Chevrolet at Watkins Glen.

  • Venus Williams lost in her first match in more than two months, falling 0-6, 6-4, 6-2 to Kirsten Flipkens at the Rogers Cup in Toronto.

  • The New York Knicks signed free-agent forward Jeremy Tyler. Terms were not disclosed. Tyler appeared in 21 games with the Warriors and Atlanta Hawks last season before finishing the season with Santa Cruz of the NBA D-League.

    The Associated Press and wire services contributed to this report.