Anyone who says Kovalev can't box and wasn't any good doesn't now boxing and couldn't see him actually hanging with Ward and beating him at times in both fights, also Ward is a Olympic Gold Medal winner, cleaned out 160, won the super six, quit easily and hasn't loss like in forever, i think sense he was 10 years old.
Kovalev was out boxing Ward at times and both fights were close, if only Kovalev did his abdominal exercises correctly and had stamina, that fight would've been super close, just like the first fight was and it's his fault that happened, now he's got the chance to fix those mistakes and be champion again and clean out 175, then ask for the Ward rematch.
But he won't even do this and keep training the same way, then get stopped again and retire.
Also he would probably lose to Ward again, because Ward is just a smarter boxer then Kovalev and that's a fact, also Ward would find another way to beat Kovalev in another rematch, Ward might just fight Kovalev inside toe two toe, rough him up style and take Kovalev"s legs away, this way, then knock him out, these fighters will figure out multiple ways to defeat you in tough fights, then make it easy, just like Floyd and other high ring IQ fighters.
But Kovalev is no joke and there's nothing wrong with losing to Ward, only if you actually put in all the true hard work and not leave it in the gym, just ask Floyd about putting in actual real work in camp and doing two a days and 40 minutes of sparring with no rest and only a water break at times, going against 3 sparring partners for 40 strait minutes, Kovalev you need to talk to Floyd and get advice on actual training camp preparation and hard work.
Until then, your going to simply keep getting stopped, until you retire and that's a fact.