Improvements Joshua needs to beat Ruiz in the rematch

He needs to park his left hook. He might have landed it and even knocked Ruiz down with, but it’s what got him hurt both times in the end. He also needs to develo an intelligent, dynamic and authoritative jab and the stamina and focus to commit to it for 12 rounds. The first one is a simple adjustment, the second not so much- especially in a 5-6 month interim.

 

Straight shots down the pipe. Not loading up and use his feet.

I don't think Ruiz has the reach if Joshua keeps him at the end of his own reach.

 

Lose the muscle, standup straight and do some yoga