Sports briefs: Raiders' top pick D.J. Hayden in hospital
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NFL • Oakland Raiders first-round draft pick D.J. Hayden's comeback from a near-fatal practice injury last year was dealt a setback when he was hospitalized with an abdominal injury that is expected to keep him sidelined until at least training camp.

Coach Dennis Allen said Tuesday at the start of Oakland's second week of OTAs that Hayden was hospitalized late last week and had surgery to remove scar tissue from the abdominal region. The Raiders said they don't know when Hayden will be released from the hospital. Allen said he did not know if the latest injury was related to the torn blood vessel that nearly killed Hayden last November after a practice collision with a teammate at Houston.

• Ten members of Congress are urging the Washington Redskins to change their name because it is offensive to many Native Americans. The representatives said Tuesday they've sent letters to Redskins owner Dan Snyder, NFL Commissioner Roger Goodell, Redskins sponsor FedEx and the other 31 NFL franchises. Among the group sending the letters are the leaders of the Congressional Native American Caucus: Tom Cole, R-Okla., and Betty McCollum, D-Minn.

• Jim Brown, who led the Cleveland Browns to the 1964 NFL championship and later served as a senior adviser, will return to the team in an unspecified role.

• The NFL announced that the 2014 draft will be held May 8-10 at Radio City Music Hall because of a scheduling conflict with an Easter show in April at the venue.

Colorado athletic director resigns

PAC-12 • Colorado athletic director Mike Bohn is resigning effective June 3, Chancellor Philip DiStefano said in a written statement. Reasons for the resignation weren't disclosed. During Bohn's time at Colorado, the Buffaloes moved from the Big 12 Conference to the Pac-12 and sent their basketball teams to the NCAA Tournament. But football coach Jon Embree was fired after the team went 1-11 last season. Embree was replaced by former San Jose State coach Mike MacIntyre.

From wire reports