NEW YORK :Defending champion Jannik Sinner said he enjoyed the vibe of playing under the Arthur Ashe Stadium lights after he continued his hardcourt Grand Slam run by hammering 23rd seed Alexander Bublik on Monday to make the U.S. Open quarter-finals. The Italian came into the match on Labour Day seeking his 25th straight major match win on his preferred surface and never looked in danger against a tricky rival, bolting out of the blocks to win 6-1 6-1 6-1 on his night session debut this year. "