WATCH: Greg Rusedski and Jamie Delgado's serving masterclass
Thursday 16 November 2017 18:39, UK
Greg Rusedski and Jamie Delgado gave a serving masterclass on Sky Sports - and got a surprise visit from a tennis legend.
Former world No 4 Rusedski once held the record for fastest serve in the world at 149mph, while Delgado has been coaching Andy Murray since 2016.
The duo discussed the key points about how to serve, from where the toss should be, to where to strike the ball and how to follow through.
And there was a visit from a special guest as six-time Grand Slam champion Boris Becker popped by the court and imparted some of his wisdom.
Hit play on the video at the top of the page to watch the masterclass.
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