VISTA, Calif. -- A former San Diego State University football player who was shot by his police captain father after he assaulted his mother in her Fallbrook home pleaded guilty Thursday to an assault with a deadly weapon charge.

Reginald Grigsby Jr. will be sentenced to one year in county jail on Oct. 16, according to terms of a plea agreement, Deputy District Attorney Brenda Daly said.

According to the San Diego County Sheriff's Department, Grigsby went to the house on May 23 and had an argument with his mother, Desirah Grigsby, that turned violent. His father, a captain with the Oceanside Police Department, retrieved a handgun and shot his 25-year-old son to stop the attack on his wife.

Grigsby, who played safety for the Aztecs from 2003 to 2006 and was a star at El Camino High School in Oceanside, was hospitalized along with his mother, who Daly said was choked to unconsciousness and hit in the head twice.

Judge Robert Kearney denied a request by both parents that their son be released from custody pending sentencing, Daly said.

The defendant, who was a coach at the Army and Navy Academy in Carlsbad when he was arrested, had faced 14 years in prison if convicted on all the charges facing him.