WBC heavyweight champion Deontay Wilder was ordered to do 60 hours of community service after being found guilty of misdemeanour marijuana possession.
The 32-year-old American – who has been linked with a 2018 title unification bout with Britain’s Anthony Joshua – was arrested in Alabama last June.
He received a 30-day suspended sentence and two years of probation.
Wilder, who defends his title against Luis Ortiz on 3 March, has to perform the community service at a local YMCA.
“We respect the court’s ruling. Of course we were hoping a dismissal would be granted,” Wilder’s lawyer, Paul Patterson, said.