Jannik Sinner took a lot of risk on his debut in Dubai against Alejandro Davidovich Fokina, but managed to win after having canceled three match points in the tiebreak of the second set. Certainly not an exciting performance offered by the young Italian, who made too many free mistakes in the first two halves.His performance went up in the third, but it will take a different version of Jannik to get the better of Andy Murray in the next round. The Scottish champion won the only head-to-head to be staged in Stockholm last year. Sinner said: “I lost to Andy Murray in Stockholm, so I hope to take my revenge here in Dubai.He is still a great player despite his injuries, I will have to play my best tennis to be able to beat him.” Sinner: “Maria Sharapova …