A brazen US Open fan was caught red-handed trying to open and steal something from Jannik Sinner's bag on Monday night. <br /><br />The Italian had just secured his spot in the quarter-finals of the tournament in New York City and packed up his tennis gear before heading back to the locker room. <br /><br />Sinner, a four-time Grand Slam champion, was about to leave the court when he walked over to fans in the front row to hand one of them a towel. <br /><br />As he did so, Sinner then paused to take a selfie with another supporter. <br /><br />Sensing his opportunity, the daring fan can be seen leaning over and trying to try and pull the zip down on his bag. <br /><br />Fortunately, a security guard quickly noticed what was going on and swatted the fan's hands away before he got into Sinner's bag. <br /><br />Sinner quickly turned around to see what was going on, and the fan quickly pulled his hands back and looked embarrassed that he had been caught. <br /><br />It is not the first time during this year's US Open that a fan has gotten too carried away in trying to get items from a star player. <br /><br />A Polish millionaire businessman attracted fury last week when he stole a player's cap that was intended for a young fan. <br /><br />Piotr Szczerek was unmasked by internet sleuths after a viral video showed him swiping the memento intended for a child, known as Brock, by tennis star Kamil Majchrzak. <br /><br />He finally issued a groveling apology on Monday, saying in a lengthy statement he made 'a huge mistake' and revealed he has since given the hat back to Brock. <br /><br />Monday night's incident was an unsavory end to what had been a comfortable night for Sinner. <br /><br />Sinner overwhelmed the only player other than Carlos Alcaraz who has defeated him this season, routing Alexander Bublik 6-1, 6-1, 6-1 to return to the quarterfinals of the tournament he won last year. <br /><br />The top-seeded Sinner's victory took just 1 hour, 21 minutes, the second-shortest completed match in the tournament. A first-round victory for Tomas Machac was a minute shorter. <br /><br />'At times I felt like today I was playing some great tennis, and I managed to break him very early, which then gave me the confidence to serve a little bit better and play from the back of the court a bit better,' Sinner said. <br /><br />'It was a faster, or a fast match.' <br /><br />Sinner lost to Bublik in June in Halle, Germany, in a warm-up tournament before Wimbledon, but that was played on a grass court. Trying to beat the defending US Open champion on a hard court is an entirely different story. <br /><br />Sinner has won 25 straight Grand Slam matches on that surface, including the last two Australian Open titles, along with his first US Open trophy last year. <br /><br />He will face fellow Italian Lorenzo Musetti, the No. 10 seed, on Wednesday.
