Anthony Joshua and Oleksandr Usyk paid homage to the celebrated Rocky III training montage, as their unlikely rivals-to-allies partnership continues to blossom. Following a car crash in Nigeria last December that tragically killed two close friends, Joshua has trained this year in Spain and Ukraine alongside his former adversary, who has beaten him twice in the ring. Usyk posted an Instagram video on Saturday of the pair racing on a beach to the Rocky music, recreating the iconic scene between Sylvester Stallone and Carl Weathers’ characters. The tribute is particularly poignant, as Stallone’s Rocky Balboa and Weathers’ Apollo Creed also boxed each other twice in the film before becoming training partners and close friends. “This isn’t a movie remake, it’s a new story being created right now,” Usyk wrote in the caption. The video also features the duo punching the heavy bag and interacting as they ready themselves for imminent fights, with Joshua set to return to the ring against Kristian Prenga on 25 July.…