French Open tennis - Alexander Zverev pays tribute to Roman Safiullin - 'He's playing incredible tennis'

Alexander Zverev survives Kei Nishikori scare to set up Rafael Nadal clash at Italian Open

After ankle injury, Zverev returns on crutches to address Chatrier before retiring from Roland Garros semifinal

French Open tennis - 'I played incredible but the tournament's not over' - Alexander Zverev

Novak Djokovic congratulates Alexander Zverev on ATP Finals win, says he had an "incredibly tough year on and off the court"

Djokovic 3-2 Zverev