Metz' and Lyon's players reacts after a firecracker has exploded on the pitch during the French L1 football match between Metz (FCM) and Lyon (OL) on December 3, 2016 at Saint Symphorien stadium in Longeville-Les-Metz, eastern France.  / AFP / JEAN-CHRISTOPHE VERHAEGEN        (Photo credit should read JEAN-CHRISTOPHE VERHAEGEN/AFP via Getty Images)