Home Game Advantage
When a rugby final looms and 50,000 people swell the grandstands, does it help or hinder the home side?
Research form the University of Canterbury is probing the impact of crowds and match officials on 'the home game advantage'.
While most teams rise to the occasion when the crowd roars its support, there can be other outcomes too.
And what about events like the Tokyo Olympics where there are no supporters to spur you on?
Katy Gosset hits the sports field to find out more.