WWE joked about Rob Gronkowski's NFL return, telling the 24/7 Championship holder he still had to defend his title "anytime, anywhere" .Gronkowski, 30, claimed the title at WrestleMania 36 earlier this month, having initially retired from the NFL in March last year. defend his title – even if it meant it was while he was celebrating with Brady. "Congratulations to @RobGronkowski, the current WWE 24/7 Champion, on his return to football," it wrote on Twitter. "For the rules of the 24 / 7 Title, Gronk must defend his championship at all times in any location. "He could be celebrating a touchdown pass from @TomBrady … anytime, anywhere."