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Northern Ireland's midfielder Steven Davis (C) celebrates with teammates after scoring the opening goal during the UEFA Euro 2016 qualifying Group F football match between Northern Ireland and Greece at Windsor Park in Belfast, Northern Ireland, on October 8, 2015. AFP PHOTO / PAUL FAITH (Photo credit should read PAUL FAITH/AFP/Getty Images)

Northern Ireland's midfielder Steven Davis (C) celebrates with teammates after scoring the opening goal  during the UEFA Euro 2016 qualifying Group F football match between Northern Ireland and Greece at Windsor Park in Belfast, Northern Ireland, on October 8, 2015.    AFP PHOTO / PAUL FAITH        (Photo credit should read PAUL FAITH/AFP/Getty Images)