Jannik Sinner matched Novak Djokovic ’s record winning streak at Masters 1000 tournaments with his 31st consecutive victory to reach the quarter-finals at the Italian Open . The home hero eased to a 6-2 6-3 win against qualifier Andrea Pellegrino at the Foro Italico. Sinner already set a new record by winning a fifth straight Masters tournament in Madrid last weekend and is now aiming to complete the set of nine titles at the top level of the ATP Tour – something only currently achieved by Djokovic. The world No 1 has dropped only two sets since he lost his most recent match against Jakub Mensik in February. Second seed Alexander Zverev was stunned by another Italian, 18th seed Luciano Darderi, who fought back from a set and 5-3 down and saved four match points in a 1-6 7-6 (10) 6-0 victory. Zverev hit out at the condition of the court, telling reporters in the Italian capital: “I think this is the worst court I’ve ever played on.…