Novak Djokovic’s bid for a calendar Golden Grand Slam was dramatically ended by Alexander Zverev in the Olympics men’s singles semi-finals on Friday, with the World No. 1 saying the loss had left him feeling so terrible right. 

Djokovic collapsed from a set and a break ahead as German fourth seed Zverev won 1-6, 6-3, 6-1 to set up a Sunday final against Russian Karen Khachanov. 
“Tough day, a really tough day,” said Djokovic, 34, who has never won the Olympic singles title.