Footballers are a superstitious bunch.
Numerous players have to do certain things before they play a match just to make them feel good mentally.
For example, Daniel Sturridge always has to enter the pitch backward while Paul Ince made sure he was the last player onto the pitch and would put his shirt on in the tunnel.
But if it helps get results, who are we to question it?
And another player's superstition has emerged on social media on Tuesday.
It involves Chelsea’s Thibaut Courtois and what he does during the Belgian national anthem.
The video shows Courtois singing the anthem on four separate occasions and, when the camera reaches him, he touches his chin each time.
It’s so odd.
Watch: Courtois' odd behaviour
Take a look:
Does he even know he’s doing it?
Or is it his very own superstition?
We’d love to know.
If it is superstitious, it’s certainly working for Belgium.
The Red Devils have won seven of their eight matches in their World Cup qualifying group and have already booked their place in Russia.
With Courtois between the sticks and the likes of Kevin de Bruyne and Romelu Lukaku going forward, you certainly wouldn’t bet against Roberto Martinez’s side going all the way at next summer’s World Cup.
Especially when the goalkeeper performs his bizarre pre-match ritual.
Maybe he should start doing in before Chelsea matches when the Premier League anthem plays. Then again, he might need more than a superstition to help Chelsea overhaul both Manchester club this season - who already have a six-point lead over Antonio Conte's men.
Then again, he might need more than superstition to help Chelsea overhaul both Manchester club this season - who already have a six-point lead over Antonio Conte's men.