JACKSONVILLE, Fla. (AP) _ Former NFL and Olympic star Bob Hayes remained in the hospital Monday, still weak and unable to walk while recovering from prostate surgery and other ailments.

Hayes' mother, Mary Robinson, said her 58-year-old son can sit up in bed and she expects him to be transferred to a rehabilitation center this week.

Hayes was admitted to the hospital last month for heart trauma, and doctors discovered kidney and liver ailments. Hayes underwent surgery for prostate cancer last month.

His sister, Lena Mae Johnson, said her brother has ``gotten stronger.''

Hayes won two gold medals in the 1964 Olympics and earned the title of ``world's fastest human'' after rallying the United States to a gold medal in the 400-meter relay.

A year later, the Dallas Cowboys drafted him. The ``Bullet'' caught more than 7,400 yards in passes during his 11-year career and became the only athlete to win a Super Bowl ring and an Olympic gold medal.