Daniil Medvedev was asked by the umpire not to shout at a line judge during his second-round victory over Gael Monfils at the Monte Carlo Masters.
The 2021 US Open champion was leading 6-2 1-2 when he angrily disagreed with two calls on the baseline and vented his displeasure at the official.
Swedish umpire Mohamed Lahyani twice came on to court to check calls and calm down Russian fourth seed Medvedev.
“Daniil please don’t shout at him,” Lahyani said. “He (the line judge) can make a mistake as well.”
Medvedev was 40-15 up in that game but lost his serve and then went 4-1 down before winning five games in a row to seal a 6-2 6-4 success and progress to a last-16 meeting with compatriot Karen Khachanov.
The disagreement began when a shot from Monfils, which Medvedev returned with a forehand winner, was called out.
Lahyani came out of his chair to check the call but said it was in and awarded the point to the Frenchman before Hawkeye showed the ball was in fact out.
On the following point, Monfils’ shot was called in when it had travelled beyond the baseline.
A frustrated Medvedev then began to shout and this time the umpire agreed with him.
The world number four continued to remonstrate during the change of ends and was pictured hitting the canopy of his chair.
When Lahyani said he would apologise if he was wrong, Medvedev replied: “How can you apologise, I lost the freaking game. How did I lose the game when it’s out? It’s out, it’s out.”
Keys downs Gauff to reach Madrid Open quarter-finals
Madison Keys is through to the quarter-final of the Madrid Open for the first time in her career after rallying to a 7-6 (7-4), 4-6, 6-4 win over Coco Gauff on Monday.
The 29-year-old trailed 5-2 in the first set and 4-2 in the third set but rallied in both to come from behind to beat the number three seed.
Despite winning the second set, Gauff struggled to find her rhythm, suffering from 13 double faults, including two in the final game.
Keys will face former Madrid Open champion Ons Jabeur for a spot in the semi-final after the number eight seed overcame Jelena Ostapenko in straight sets.
Data debrief: Keys reaches new milestone
Having lost in the first round in seven of her nine previous trips to the Spanish capital, Keys has now bettered her previous best finish in Madrid - a third-round showing in 2016.
Keys hadn't won three matches in a row since reaching the US Open semifinals last year.
Keys downs Gauff to reach Madrid quarter-finals
Madison Keys is through to the quarter-final of the Madrid Open for the first time in her career after rallying to a 7-6 (7-4), 4-6, 6-4 win over Coco Gauff on Monday.
The 29-year-old trailed 5-2 in the first set and 4-2 in the third set but rallied in both to come from behind to beat the number three seed.
Despite winning the second set, Gauff struggled to find her rhythm, suffering from 13 double faults, including two in the final game.
Keys will face former Madrid Open champion Ons Jabeur for a spot in the semi-final after the number eight seed overcame Jelena Ostapenko in straight sets.
Data debrief: Keys reaches new milestone
Having lost in the first round in seven of her nine previous trips to the Spanish capital, Keys has now bettered her previous best finish in Madrid - a third-round showing in 2016.
Keys hadn't won three matches in a row since reaching the US Open semifinals last year.
Nadal goes the distance to reach Madrid Open last 16
Rafael Nadal battled to victory over three hours on the court against Pedro Cachin at the Madrid Open on Monday to seal a 6-1 6-7 (5-7) 6-3 win to reach the last 16.
The former world number one looked back to his best as he cruised through the opening set but was pushed hard in the second by Cachin.
Nadal came from behind to level at 5-5, but Cachin eventually sealed the set on his third set point.
The Spaniard then rallied in the third set, cutting down on his errors to regain control and advance to the fourth round at a tour-level event for the first time since 2022.
Nadal is one step away from booking his place in a 10th consecutive quarter-final in Madrid and will face Jiri Lehecka on Tuesday in the next round after the 30th seed overcame Brazilian qualifier Thiago Monteiro in two sets.
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