Anthony Joshua and Jermaine Franklin both passed their final drugs tests after their bout on April 1.
English fighter Joshua edged out Franklin - from the United States - in a fight held at London's O2 Arena. The 33-year-old triumphed by unanimous decision, with the judges scoring it 118-111, 117-111 and 117-111 in his favour.
The victory was Joshua's first since he got the better of Kubrat Pulev in December 2020. The intervening period saw the former world champion go up against Oleksandr Usyk twice, with the Ukrainian winning the first bout by unanimous decision and claiming a split decision victory in the rematch.