Watch: ‘Unhappy’ Holger Rune shuts down the crowd booing with a hand gesture, calls for supervisor over unsportsmanship conduct warning

However, at one point, Rune was penalized with a time violation for serving beyond the stipulated time for the point. With this, the crowd started booing the 20-year-old. A very quiet stadium erupted as they continued to jeer Rune till he signaled them to be quiet. 

Upon this, he received another violation, this time over an unsportsmanship conduct warning. However, the Dane did not simply take the warning and demanded an explanation. He argued with the umpire and soon called out the supervisor to get the issue sorted out. After this, the supervisor walked out and calmed the situation down. 

The crowd continued to boo Rune, but this time he did not react and motored his way through the set. 

Holger Rune came back to win the second set, fueled by the crowd

Holger Rune, who was on the losing side of the second set, spent a good amount of time arguing with the umpire and getting booed by the crowd. However, as many would expect, Rune fueled in more energy from this to level up his gameplay. 

After losing the game, the Dane came back to win the game and pushed the second set into a tie-break. The Dane has a wonderful record in tiebreaks and was pretty confident heading into one against Sinner.