Potapov rhymes with:
andropov, karpov, andropov, baryshnikov, bordenave, branislov, chebrikov, improv, kalashnikov, kamentsev, karpov, khlebnikov, lubinov, maslyukov, nabokov, poznikov, rybakov, vaclav, vaslov, vorontsov, yugoslav
Potapov sounds like:
petipa, photoop, piedboeuf, potpie, potthoff, putative, puthoff