Northern Ireland and Poland look for first wins at Euros (The Associated Press)

Decades since Poland or Northern Ireland made a mark at an international football competition, both teams will be looking to get their European Championship campaigns off to a strong start on Sunday when they play each other in Group C. Northern Ireland, playing in its first European Championship, has the longest unbeaten run of any team in the competition, while Poland has Robert Lewandowski, one of the most feared strikers at the tournament. Northern Ireland's 12-game unbeaten run and first place in its qualifying group were eye-catching but those achievements were helped by a comparatively easy group in which ultimately Romania and Hungary proved to be the biggest threats.