What makes you think he’s on the decline?Saunders looked just about on top until the fractured orbit, which he would have been stupid to fight on from.
Alrarez' fights have caught up with him, and would be a good decision if he retired at the top now as the his decline is clearly on the cards.
BJS has always been difficult to hit & extremely awkward to fight against. It didn’t look to me like Father Time is catching up on Canelo, unless I missed something which someone with a better eye than mine for boxing has picked up on?