the spanish league la liga will soon be back in action... all players will run around the field like ninjas 
https://pbs.twimg.com/media/EVjOwyUWsAAPVt5?format=jpg
Does running with a mask like that do not interfere with the breathing of the players, if indeed it is official? https://pbs.twimg.com/media/EVjOwyUWsAAPVt5?format=jpg
But it seems like it would be interesting to watch if it really happened.
But as far as I know the announcement or the media has not yet preached the news, have I missed the news?
I think that whole mask thing was just a simple joke... I don't it was supposed to be serious or even seriously taken by people. How i wish this announcement was made on April Fools' Day