Yesterday, in a shocking incident, tennis world no. 1 Novak Djokovic was disqualified from the US open after hitting a line umpire with a tennis ball. Djokovic was expressing frustration at missing three points in a row but he ended up hitting the ball at the umpire by mistake. Across the world, sportspersons are facing a new phase of uncertainty. What are the kind of pressures they face. We talk to Leslie Xavier on these issues.