Schalke's Cameroonian defender Joel Matip celebrates after scoring the 1-0 goal during the German first division Bundesliga football match FC Schalke 04 v 1 FSV Mainz 05, in Gelsenkirchen, on September 13, 2015. AFP PHOTO / SASCHA SCHUERMANN RESTRICTIONS: DURING MATCH TIME: DFL RULES TO LIMIT THE ONLINE USAGE TO 15 PICTURES PER MATCH AND FORBID IMAGE SEQUENCES TO SIMULATE VIDEO. == RESTRICTED TO EDITORIAL USE == FOR FURTHER QUERIES PLEASE CONTACT DFL DIRECTLY AT + 49 69 650050. (Photo credit should read SASCHA SCHUERMANN/AFP/Getty Images)