Andy Murray hasn’t played a competitive game of tennis since crashing out of Wimbledon in the summer.

The Brit lost his world No 1 status this year after ending his season early due to a hip injury.

He has returned to the practice court but will not play at the ATP Tour Finals in London next week.

Murray will, however, play in front of 11,000 people against Roger Federer on Tuesday in Glasgow.

But why are the two tennis greats meeting up outside of an official ATP tournament?

Here’s all you need to know about Murray vs Federer…