Jannik Sinner typically shows little to no emotion on the court. However, on Friday, the Italian uncharacteristically expressed frustration with his camp during his encounter against Ben Shelton at the Paris Masters.After being broken in the second set, Sinner appeared to shout at his team seated courtside, urging them to show more support.“I make a break and your f*cking sitting,” he was seen saying.Despite the outburst, Sinner's game was unaffected and he advanced to the semifinals by winning the match 6-3, 6-3. He then went to his team and emotionally hugged all of them, a video of which is now circulating on the internet.Fans were quick to react to Sinner's joyous moment. "They needed to show Jannik how much they care so he wouldn’t swear at them again," one fan wrote."they were lowk just relieved it didn’t go on any longer and Jannik didn't get the opportunity to throw his racket at them," another fan wrote."they were scared Jannik would beat them with his racket," one fan posted."everybody celebrating that their salary’s safe and sound," one fan added."I mean if they’re THAT relieved…sum goin on," one fan commented."Sinner passing by like a villain while his henchmen are happy to live another day is absolute sinnema," another posted.Sinner will face Germany's Alexander Zverev in the semifinals on Saturday.Jannik Sinner blasts slippery courts at Paris MastersJannik Sinner has not enjoyed much success at the Paris Masters. The Italian has struggled in previous editions and has not looked at his free-flowing best this year. According to the Italian, the conditions in Paris are quite unique (via SI):"I didn't play last year. I usually never played well here. For me, it's very difficult to compare with the court since two years… not even last year. So it's very difficult. It is a very unique court."With new balls the ball still goes quite fast. It's not as bouncy, but then, after the ball is quite big and slow. It changes a bit also the timing of the ball."Sinner also said the surface is a "bit slippery" and tough to get accustomed to."It's a very unique court here. Usually, I always struggled a bit. Very happy to come through the first match. Very happy with how I served today, I was very precise," Sinner said."Also, I started off with the break straight away, which gives you a bit more confidence. I'm happy about today's performance. Let's see what's coming tomorrow."It remains to be seen if Sinner can overcome his challenges in Paris and claim the title. With Carlos Alcaraz falling to Cameron Norrie early, Sinner is threatening to dethrone the Spaniard from the No. 1 position.