Everyone has two sides to themselves in some sense.
Whether you're acting one way to say, an elder, in comparison to a close friend or in some other form. This idea of having multiple personas is very evident in every day life - and in sports - too.
The clearest example would be the above of coming together.
Not saying players want to hurt one another, but it's clear that football is a contact sport. And these men go from running on the field full of adrenaline wanting to make a big tackle on a player to the converse at the end of the game - joining hands with said same opponent to pray.
With the deadly attacks in Paris, France hours before this football game - and whether these players were praying about others well-being or something else - it's amazing when two large group of men can set aside differences and join hands in peace.