After beating Fiorentina in penalties in the first round of the Opel Cup, Athletic faced off with host club Mainz. The German side was in control to start the match, but the Basques did well to slowly take over as the minutes passed. Mikel San José had a header saved and Iñaki Williams saw a shot go right to the keeper, but other than that the Lions were not able to generate any other real chances. Like the previous round, this match ended in a scoreless draw and went to penalties. Beñat, Iñaki Williams, and Ander Iturraspe all made their shots but Christian Ganea’s shot was off target which allowed Mainz to win the game. Mainz would go on to draw against Fiorentina who were eventually names champions of the Opel Cup through tiebreakers.