Question: why nadal is out of atp finals?
Answer: Rafael Nadal out of ATP Finals as Alexander Zverev completes semi-final lineup. Rafael Nadal is out of the ATP Finals after Alexander Zverev beat Daniil Medvedev to seal his place in the last four. ... That proved too tall an order for fourth seed Medvedev, who fell to a 4-6, 6-7 defeat against a determined Zverev.