The former 49ers star was sentenced by a federal judge to 90 days in jail for stealing his former girlfriend's mail.
The 40-year-old Stubblefield, a defensive lineman for the 49ers, Washington Redskins and Oakland Raiders from 1993 to 2003, was sentenced by U.S. District Court Judge Susan Illston on Thursday.
Earlier this year, Stubblefield admitted submitting a change of address form so his former girlfriend's mail, including her unemployment checks, would be delivered to his residence. Stubblefield was placed on probation last year after pleading guilty to lying to investigators about his steroid use during his playing days.
Despite his legal troubles, Stubblefield has remained a public figure. Just last year, he was an assistant coach at San Jose's Valley Christian High School and recently rode on the 49ers float during the annual San Jose Holiday Parade.