Dortmund's players celebrate scoring the 1-0 during the German first division Bundesliga football match between FSV Mainz 05 and Borussia Dortmund in Mainz, central Germany, on January 29, 2017. / AFP / Daniel ROLAND / 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 DANIEL ROLAND/AFP/Getty Images)

Dortmund's players celebrate scoring the 1-0 during the German first division Bundesliga football match between FSV Mainz 05 and Borussia Dortmund in Mainz, central Germany, on January 29, 2017. / AFP / Daniel ROLAND / 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 DANIEL ROLAND/AFP/Getty Images)