"Matěj si při zápasu zranil levé rameno."

Translation: Matěj injured his left shoulder during the match.

[Shathu_Entayla]

what's the difference between "pri" and "behem"?

[VladaFu]

Při means he actually took part in the match. Během could be anything during the match.

[Shathu_Entayla]

Gotcha! Thank you!