Watch: Milik scores Poland's 1st goal of Euro 2016 with composed finish

If you didn't know the name Arkadiusz Milik heading into Euro 2016, you certainly will once the tournament is over.

The 22-year-old Poland striker spends much of his time with the national side playing second fiddle to superstar Robert Lewandowski - and for good reason - but it was the Ajax attacker who opened the scoring in Sunday's match against Northern Ireland with a composed finish in the second half.