Kovalev was finished and wouldn't of got out of round 8

Guess we will never know.

Continuous low blows played a part.

That is correct, but he faded in the 7th after Weeks told them to fight after the low blow, which the replays clearly and indisputably showed as low. He also got hit low in the 8th (according to his actions), with Weeks again saying to continue. That right came after the low blow (not immediately obv). To me, this is Salido/Lomachenko with a very questionable stoppage to boot.

Roy predicted the outcome at round 6. Kov is a great fighter, he just can't keep up with Ward's pace. No shame in that.