(Video) Svyatoslav Gulin gets defaulted for shouting and making inappropriate gestures towards the chair umpire
Svyatoslav Gulin was up 4-0 in the third set against Alejo Sanchez Quilez before the shocking incident took place.

Svyatoslav Gulin was defaulted (via X)
One of the strangest moments in tennis this year happened during an ITF match. World No. 407 Svyatoslav Gulin was playing Alejo Sanchez Quilez and was leading the match. He had just taken a 4-0 lead in the final set.
After winning a point, Gulin suddenly turned toward the umpire. Instead of celebrating, he made rude hand gestures. He then shouted offensive words, including strong language that shocked many.
Svyatoslav Gulin got defaulted for making these gestures and swearing at the umpire while being up 4-0 in set 3 vs Alejo
— edgeAI (@edgeAIapp) April 29, 2025
Sanchez Quilez.
🎥: ITF pic.twitter.com/MSNI8XjZTf
The chair umpire followed the rules and gave Gulin a default. That meant he lost the match right away. Sanchez Quilez was declared the winner, even though he had been losing. The fans and officials were surprised by what happened. Gulin’s actions came out of nowhere. What should have been a big win turned into a sudden loss.
What caused the controversy between Svyatoslav Gulin and the chair umpire?
No one knows exactly why Svyatoslav Gulin got so upset. He was in full control of the match when the outburst happened. Defaults are very rare in pro tennis and only happen for serious rule violations. Gulin now joins a small group of players disqualified for bad behavior.

This case shows how important it is to stay calm on court. Even when winning, players must control their emotions. One bad moment can change everything.
The ITF is likely to look into the incident more closely. Gulin may face more punishment, like a fine or a suspension. For now, Gulin is left with regret. He was close to winning the match and earning ranking points. But his actions cost him both.
Svyatoslav Gulin controversy to the growing list of defaults in tennis
Today’s shocking default of Svyatoslav Gulin has drawn strong comparisons to a bizarre incident from two months ago at the Davis Cup. Gulin, ranked No. 407, was leading 4-0 in the final set when he suddenly turned on the chair umpire, shouting vulgar language and making obscene gestures. The umpire had no choice but to default him, handing the match to his opponent despite Gulin being in complete control.

This dramatic scene comes just weeks after a strange clash between Zizou Bergs and Cristian Garin in the Davis Cup. In that match, Bergs accidentally struck Garin in the face with his shoulder while celebrating a key point. Garin fell to the ground, clutching his eye. The moment spiraled into confusion, with Garin refusing to continue, resulting in a game penalty and a win for Bergs.
While Gulin’s outburst was entirely self-inflicted, both cases reflect how emotions and split-second actions can derail a match. In Garin’s case, it was a physical mishap and refusal to return. In Gulin’s case, it was uncontrolled anger and disrespect toward the umpire.