Stan Wawrinka overjoyed after young fan imitates his signature celebration during ABN AMRO Open in Rotterdam

Swiss tennis player Stan Wawrinka has reacted to a heartening video of a young fan celebrating one of his points with his signature move.

At the ongoing ABN AMRO Open in Rotterdam, Wawrinka fell to Italy's Jannik Sinner 6-1, 6-3 during their quarterfinal match on Friday but not without putting up a fight. This was the pair's fourth meeting, with Sinner now tallying the head-to-head at 2-2.

In a video shared by Tennis TV, a young kid can be seen cheering Wawrinka during the second set when he was on the verge of breaking Sinner's serve. The young fan jumped up and down in delight and celebrated the Swiss' point by pointing a finger at his head -- a celebration that has become synonymous with Wawrinka over the years.

"When Stan celebrates to you," Tennis TV tweeted.

The 37-year-old took note of the tweet and responded to the same with multiple heart emojis.

On his way to the quarterfinals, the Swiss star defeated both Kazakhstan's Alexander Bublik in the first round and France's Richard Gasquet in the second round in straight sets.

A lookback at Stan Wawrinka's best moments of his tennis career

Stan Wawrinka with his 2016 US Open trophy

Swiss tennis player Stan Wawrinka turned pro in 2002 and has been active on tour for more than two decades now. Wawrinka has made a deep impact on the sport over the years, managing to win multiple big titles in the Big-4 era.

The 37-year-old has won 16 ATP singles titles and three Grand Slam titles. His first Grand Slam win came at the Australian Open in 2014, where he defeated Spain's Rafael Nadal in four sets.

The following year, he triumphed at the French Open by defeating Serbia's Novak Djokovic in four sets. The following year, in 2016, he won his third Major title at the US Open, taking down Djokovic once again in four sets.

Wawrinka has also won an Olympic gold medal in doubles at the 2008 Beijing Olympics with partner Roger Federer. The Swiss team also reigned supreme at the 2014 Davis Cup, where Wawrinka was an integral part of the squad.

He reached a career-high ranking of World No. 3 in January 2014. Wawrinka is the second Swiss man in the Open Era to win a Grand Slam after tennis legend Roger Federer. Like Federer, the three-time Grand Slam champion is also known for his stellar single-handed backhand.