to resign follwoing his world cup final behaviour. and saudi arabia have a new head coach.in former italy and manchester boss roberto mancini. novak djokovic will replace rival carlos alcaraz as the men s world number one after a comfortable win on his us open return. djokovic, who lost the wimbledon final to alcaraz, came through his first round tie against frenchman alexandre muller having not been allowed to play in the us last year because he wasn t vaccinated against covid 19. patrick geary reports. they have stamped his passport, they call his name.