Unbeaten run – Borussia Dortmund are currently 15 games without defeat in all competitions, a run that includes 13 wins and two goalless draws.
Last time out – Saturday saw Dortmund, currently second in the Bundesliga, held 0-0 at home by league leaders Bayern Munich. They had 39 per cent of the overall possession, compared to Bayern's 61 per cent.
Position – Our opponents are currently second in the Bundesliga table with 58 points from 25 games, five points off the top.
Last loss – Dortmund's most recent defeat came away at Kevin Wimmer's former club, 1. FC Köln, on December 19. They lost 2-1 after a last-minute goal.
Euro defeat – Their last home loss was in the Europa League, a 1-0 reverse against Greek side PAOK on December 10. That was one of two defeats they suffered in the competition's group stage, the other one being away to Russian side Krasnodar.
English opponents – Dortmund’s record in 19 competitive matches against English opponents is W9 D4 L6 (W5 D3 L1 at home).
Firepower – Dortmund have scored 20 goals in their six European home games so far this season.
Attempts – Dortmund have hit the woodwork nine times during this Europa League campaign so far and have had more shots on (59) and off target (58) than any other team in this year’s competition.
Son shines – Heung-Min Son has scored five times in his last five matches against Dortmund, playing for Hamburg and, latterly, Bayer Leverkusen.
Euro beginnings – Borussia Dortmund started this season's Europa League campaign in the third qualifying round, beating Austrian side Wolfsberger AC 6-0 on aggregate.
Making progress – They then beat Norwegian side Odd 11-5 on aggregate in the play-off round before finishing second in Group C behind Krasnodar with 10 points from their six games. PAOK and Gabala were also in their group.
Qualifying for last 16 – Dortmund beat Porto 3-0 on aggregate in the round of 32, winning 2-0 at home and 1-0 away.
Stadium – Dortmund play their home games at Signal Iduna Park, a venue which hosted matches at the 1974 and 2006 FIFA World Cup finals.
Boss – Dortmund are managed by Thomas Tuchel, who was previously in charge at 1. FSV Mainz 05.
Marksman – Pierre-Emerick Aubameyang is Dortmund’s top scorer this season with 32 goals in 37 games in all competitions, including 22 in the Bundesliga.
Player connections – Kevin-Prince Boateng played for Dortmund on loan from us during 2009. We signed midfielder Steffen Freund from Borussia Dortmund in 1998. He won the 1995 and 1996 Bundesliga titles with them, as well as the 1997 Champions League. Defender Young-Pyo Lee left us for Borussia Dortmund in 2008.
Past meetings – We beat Borussia Dortmund 3-0 in the Feyenoord Jubileum Tournament in Rotterdam in August, 2008, thanks to goals from Darren Bent, Giovani dos Santos and Jamie O'Hara. We also drew 1-1 in a pre-season friendly away to Dortmund in August, 2006, with Dimitar Berbatov on target for us. In May, 1950, we beat Borussia Dortmund 4-0 during a tour of Germany and Belgium with Sonny Walters, Len Duquemin, Eddie Baily and Harry Gilberg on target. A year later we met them in the Festival of Britain tournament, with goals from Baily and Peter Murphy giving us a 2-1 win.