Stach not only managed to hold a rally with the Swiss legend, but also to show him up with a very cheeky between-the-legs passing shot which left his opponent stunned.
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The moment came after Federer's win against Florian Mayer in Germany, and the fans certainly loved every second of the exhibition.
ATP Halle
Roger Federer beats Andreas Seppi to claim eighth Halle title
21/06/2015 AT 13:21
Federer dropped down in laughter after he was comprehensively beaten in the rally, with Stach having to hold his hand up to jokingly apologise after celebrating the showboat.
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It was an amusing moment and one which the much-loved commentator involved will surely never forget.
Still, the embarrassment did not last for Federer, who went on to claim his eighth title at Halle – which duly became the tournament at which he has achieved the most success so far in his illustrious career.
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Roger Federer beats Andreas Seppi to claim eighth Halle title
ATP Halle
Roger Federer beats Andreas Seppi to claim eighth Halle title
21/06/2015 AT 13:21
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