Stan Wawrinka took on Illya Marchenko this week in the fourth round of the US Open, with the Swiss emerging victorious, winning by three sets to one, 6-4 6-1 6-7 6-3.
The number three seed from Switzerland sailed past Marchenko to set up a quarter-final clash with Juan Martin del Potro.
The journey so far, however, has not all been quite so plain sailing for Wawrinka.
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His third round tie with Britain's Dan Evans saw the game go to two tie-breaker sets, with Wawrinka coming out the winner by three sets to two overall.
The final score finished 4-6 6-3 6-7 7-6 6-2.
The Swiss tennis star began his career in international tennis at the age of 14, and turned pro at the age of 17.
He won the 2003 French Open Junior Title, and would go on to reach number seven in the world junior rankings.
In senior competition, Wawrinka has won a huge number of honors, including 14 career men's singles titles, two doubles titles, and one Davis cup, winning a total prize money sum of £17.2 million.
In the video, we can see Wawrinka struggling to make the backhand shot (a shot which he is said to favour), and in doing so, colliding with two chairs at the side of the court.
Maybe it was this level of determination from the Swiss that was the difference between him and his opponent on the day.
Wawrinka is characterised as a powerful baseline player, but his forehand play is said to be a weakness in his game. However, this has not stopped the Swiss tennis ace from winning two Grand Slam titles.
He won the 2014 Australian Open, beating Rafael Nadal 6-3 6-2 3-6 6-3, and also the 2015 French Open, this time beating Novak Djokovic 4-6 6-4 6-3 6-4.
2014 was a great year for Wawrinka. He was chosen for the Swiss national team for that year's Davis Cup, along with teammates Roger Federer, Michael Lammer, and Marco Chiudinelli.
The Swiss team went onto win the cup, when Federer defeated Frenchman Richard Gasquet in straight sets 6-4 6-2 6-2.