LONDON – Heavyweight champion Anthony Joshua and challenger Kubrat Pulev jawed at each other through black face masks Friday on the eve of their title fight at Wembley Arena. Joshua pointed a finger in Pulev's face as they exchanged words while beefy security guards kept the peace during their weigh-in for Saturday's bout. During the exchange, Pulev twice readjusted his mask after it slipped below his nose, and Joshua’s mask also drooped low at one point. Pulev appears to be the only hurdle Joshua needs to clear before a shot at being the undisputed world heavyweight champion. First, Joshua must take care of business against the hardened Pulev, who didn't wait for Saturday to get things started.