RIVALRIES AND CAMARADERIE IN SPORT: In tennis, Roger Federer, Rafael Nadal, Andy Murray and Novak Djokovic have had great rivalries among themselves, winning every Grand Slam in the last decade and a half. But off the court, they have huge respect for each other. Nadal, who lost his crown as the leader of grand slam titles to Djokovic (the Serb now has 24 Grand Slam titles), refuses to use his injuries as an excuse for losing the crown. Saying injuries are a part of the sport, he congratulated Djokovic for achieving the feat. This humility is what makes players great. (By A.K.S. Satish, Sports Editor)