“Contract signed, hard work ahead,” Stevenson wrote.
According to an earlier statement by manager Valdes, his ward also signed a contract for this fight.
Valdes will enter this bout following his controversial win over 2016 Olympic champion Robson Conceição last September, when the judges scored 115-112, 115-112 and 117-110 in his favor. Back then, many boxing fans felt that Conceicao had done enough to deserve the win. Ideally, it would be a good gesture for Valdes to give Conceicao a rematch, but the Mexican opted for a unification fight with Stevenson.