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Tennis news - WATCH: Alexander Zverev stops point after ball boy drops ball in Federer match
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It was pretty unfortunate for the young ball boy.
In one of the biggest matches of the year, he dropped a ball in the middle of a point.
It meant Roger Federer and Alexander Zverev, who had stopped playing after seeing the incident, had to replay a crucial tiebreak point in their semi-final at the ATP Finals in London.
Zverev went on to win a famous match in straight sets... and hopefully the ball boy was not too upset - these things happen!
Watch all the drama below.
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