POOR STARTERS:
Both Dortmund and Arsenal won their respective away games when they met last season and the German side has a poor record when it comes to starting the Champions League. Dortmund has won only one of its last six opening games in the competition. "We want a good start. We want a home victory," said Dortmund defender Mats Hummels, who has a pelvic injury.
Despite losing to Napoli and Arsenal in the group stage last season, Dortmund finished at the top on goal difference and only bowed out in the quarterfinals after beating eventual champion Real Madrid 2-0 for a 3-2 aggregate loss.