Why is Germany's Antonio Rudiger wearing a face mask at Euro 2020?

If you've been paying close attention to Germany at Euro 2020, you'll have noticed that their defender Antonio Rudiger is wearing a mask while he plays.
If you've been paying close attention to Germany at Euro 2020, you'll have noticed that their defender Antonio Rudiger is wearing a mask while he plays.

Antonio Rudiger: Fascinating footage of Real Madrid's medics treating injury emerges

Antonio Rüdiger Joins Under Armour Roster

Antonio Rüdiger Joins Under Armour Roster

Why Antonio Rudiger wears a mask for Germany at Euro 2020, Football

Toni KROOS (GER) and Leon GORETZKA (GER) were in the stadium, wearing face masks and masks. Soccer Laenderspiel, friendly game, Germany (GER) - Daenemark (DEN) 1-1 on 02.06.2021 in Innsbruck/Tivoli Stadium Stock Photo - Alamy

Antonio Rudiger: Fascinating footage of Real Madrid's medics treating injury emerges

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Why Antonio Rudiger is wearing a mask for England vs Germany at Euro 2020, Football

Why is Antonio Rudiger wearing a mask during Real Madrid's match with Elche?

Why Antonio Rudiger is wearing a mask for England vs Germany at Euro 2020, Football

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Champions League winners Kai Havertz, Timo Werner and Antonio Rudiger join the Germany Euro 2020 party - in pictures