Tottenham Hotspur

• The north London club have won just two of 12 games at Wembley.
• Having gone through the 2016/17 Premier League campaign unbeaten at home (W17 D2), Spurs lost 2-1 to Chelsea in their first match of the season at Wembley.
• This is Tottenham's third time in the group stage and a second foray in as many seasons – the first time in their history they have managed consecutive European Cup campaigns.
• In 2010/11, their UEFA Champions League debut, Tottenham went all the way to the quarter-finals, losing 5-0 on aggregate to Real Madrid. Twelve months ago they came third in their group and moved into the UEFA Europa League, where they fell 3-2 on aggregate to KAA Gent in the round of 32.

Borussia Dortmund

• BVB are yet to concede in three Bundesliga games this term, though their perfect start ended with a draw at SC Freiburg on Saturday – despite the hosts playing with ten men for over an hour.
• Dortmund, contesting the group stage for the 12th time and a sixth in seven years, have reached the knockout stage on their last four UEFA Champions League appearances. In 2016/17 they beat SL Benfica 4-1 on aggregate in the round of 16, subsequently losing 6-3 to Monaco over two legs (2-3 home, 1-3 away).
• Dortmund have been paired with Tottenham's north London rivals Arsenal FC in the group stage on four occasions; they lost three of those away matches but won 2-1 at the Arsenal Stadium on 22 October 2013.