Canelo Alvarez is now mocking his opponent Billy Joe Saunders over a beef over the size of the boxing ring they'll use Saturday night ... telling TMZ Sports size doesn't matter to him at all!
Billy Joe had threatened to pull out of the highly anticipated fight at AT&T Stadium in Arlington, Texas ... claiming Canelo's camp was trying to force the fight to take place in an 18 foot ring, much smaller than Billy Joe is used to.
Billy Joe reportedly wanted a 22 foot ring -- which gives fighters more room to move around .