Yes, Sopot used to skate with Borisova.
Well, they are not completely useless, but they were not great yet. They were good enough to easily qualify to the nationals, but placed 8 out of 12. They were 3rd and 2nd at JGP and 6th at JGPF. Throughout the season they were not marking that great because they were not getting the levels (spins, death spiral), the elements were not earning enough GOE and there was a number of things like spins or jumps not being synchronised... Nothing seriously wrong with their skating, but not quite at the top yet. It doesn’t help them that the level of junior pairs in Russia so dramatically increased, so one needs to be so much better to get to the top than it was a few years ago. For comparison, several times during the season they were beaten by Panfilova/Rylov who don’t have triple jumps but have all other elements at the top level. That must have hurt! But I think Poliyanova/Sopot could be good in the future. All those little things, it doesn’t seem like something that couldn’t be fixed. They already look like a senior couple, she has already an adult body so they could last.