Melbourne, Jan 14 (Reporter) Italy’s Davis Cup hero Jannik Sinner tapped his tennis IQ for a 6-4 7-5 6-3 win over Botic van de Zandschulp on Day 1 of the Australian Open at Rod Laver Arena here on Sunday. The Azzurri started well in the first match. Then after, he had some moments where he made a couple of wrong choices. He looked a little bit tired, but he was looking forward to stepping on the court. Overall, it was a positive opening match for the Italian as he repelled the world No.59 in 2 hours and 34 minutes. The Azzurri got the opening when his Dutch opponent ran out of ideas at five-all in the second set and committed a string of errors, conceding the only break of the set at the most inopportune time. Sinner caught the US Open 2021 quarterfinalist off-guard with a cleverly disguised angled slice forehand, which drew the error. Two points later, he held a two-set lead. In the third set, Sinner was broken to love on several sketchy forehands, but quickly regained focus and lifted the intensity to peg it back immediately. A fifth break of the match saved Sinner from having to close it out on serve. "It's Sunday today. It's so long to go, but for sure you are aiming for these matches. I feel like there is still a lot of work to do to get to this point … Obviously, we aim to play big matches in big stadiums, so let's see. It's going to be an interesting tournament," he told AO after the match...////...