MONTE CARLO – After more than two months of sidelines due to a tendon inflammation in his right knee, Jannik Sinner has returned to training on the court at the Monte Carlo Country Club with his team, aiming to prepare for his return to competitive tennis, scheduled for September 30th at the ATP 500 tournament in Beijing. The world number one, sidelined since early July following his Wimbledon triumph over Alexander Zverev, has undergone intensive rehabilitation at JMedical in Turin, where he has benefited from innovative argon laser therapies with the support of the Italian Tennis Federation. The positive response has allowed the…