The fact is that the Semifinal qualufication depends on the match between the Russian Federation team and the Italian team. So what happened?
Italy's team consisted of -
* Berrettini - the world number 7th ranked player; and
* Sinner - the world number 10 ranked player.
Russia's team consisted of -
* Medvedev - the worldf number 2 ranked player; and
* Safiullin - the world number 167 ranked player.
Fact is the Russians won the match and that is a major achievement of Medvedev in particular and that unknown player nobody knew anything about.
As a result the Russians won Pool B of the competition and is now awaiting which team will qualify for winning Pool C as semi-final opponents. .