The fact that the sites are often Russian probably explains that.

Any of the Onyx Boox devices. They all have Gooogle Play.

Way better than a kindle would be whatever size Onyx Boox tablet that works for you. E-ink has come a,long way.

I use Astraweb because I can buy 1000GB at a time that doesn’t expire so I avoid the monthly fees. Works well for me as I don’t do a high volume and it removes any feeling of pressure to use it more than I need.

watchreplay.net works for NBA. Haven’t ever found a site that works for other sports.

I think you’re pretty unlikely to find anything else. I doubt it’s worth the effort for sites given people want their sport live.

I’m into tennis and I’ve had to subscribe in order to watch replays outside my timezone.