The Serbian health authorities authorised a third dose of COVID-19 vaccines for people with compromised immune systems, health workers and anyone vaccinated at least six months ago, country's labour minister said on Sunday.
For Roger Federer, Wimbledon 2021 will not only be the last Grand Slam he contests before celebrating the "big four-oh" but also a chance to put behind him the memory of his 2019 heartbreak at the grasscourt major.
Novak Djokovic will head to Wimbledon buoyed by a spectacular French Open triumph and aiming to stay on course for completing a calendar-year Grand Slam as well as going level on 20 majors with Rafa Nadal and Roger Federer.
Novak Djokovic and Rafa Nadal will add another chapter to their rivalry when they face off in a much-anticipated clash on Friday but there will be more at stake than just a spot in the French Open final.