In the match between Stan Wawrinka and Lucas Kleins at the tournament in Gstaad, a tense battle is expected. Wawrinka, although nearing the end of his career, is still dangerous on clay courts, where he excels. Kleins is also a good clay court player. However, Wawrinka's experience and skill could be decisive factors in this encounter. Wawrinka's anticipated victory could be achieved through his superior clay court game and ability to close out matches at crucial moments.