Dortmund enter the match looking up at the top of the Bundesliga sitting in sixth and yet are leading their Champions League group that includes Real Madrid. When Dortmund and Sporting met two weeks ago, Pierre-Emerick Aubameyang opened things with a fantastically executed chip on their way to a 2-1 win in Lisbon. Since that loss, Sporting haven't won either of their Portuguese league matches, scoring only one goal between the two, and now sit in fourth. Striker Bas Dost will be making his first return to a Bundesliga ground since moving to Lisbon and Sporting will hope that familiar surroundings spark muscle memory - he scored 20 goals for Wolfsburg in all competitions in 2014/15. Conversely, Dortmund will be seeing a return to Signal Iduna Park as an opportunity to get back into the devastating form their capable. American viewers, meanwhile, will be closely watching Christian Pulisic, who has appeared in each of Dortmund's Champions League matches so far.
Thomas Tuchel had Dortmund firing last season - nearly any other year, their 78 points would have been enough to win the title. But, as always, there’s Bayern. While their captain, Mats Hummels, has exited alongside Henrikh Mkhitaryan and Ilkay Gundogan (to opposite sides of Manchester), Dortmund have brought in capable replacements in Mario Götze and Andre Schürrle while also keeping hold of Pierre-Emerick Aubameyang. With master tinkerer Thomas Tuchel now settled as he takes on his second season at Signal Iduna Park, there will be few teams confident in overpowering or outsmarting Dortmund.
Sporting snatched away manager Jorge Jesus, regarded as the best in Portugal, from crosstown rivals Benfica, last year, but one season wasn’t enough for him to end their 14 season title drought. In the Champions League, they didn’t make it past the play-off round, so the group stage this year is an improvement, despite being drawn into a group with giants Real Madrid and Borussia Dortmund. Algerian striker Islam Slimani left for Leicester after scoring 27 goals last season, so it may be Joel Campbell - on loan from Arsenal - who could step up. He’ll be backed by a strong Portuguese midfield including William Carvalho and Adrien Silva.
Dortmund somehow managed to keep hold of the electric forward who scored 39 goals last season.
The Greek defender will be even more crucial to Dortmund's season after captain Mats Hummels departure. His last name, Papastathopoulos, is too long to print, so his jersey simply reads, "Sokratis."
The Euro 2016 winner was linked to top EPL clubs over the summer, but stayed put and will be crucial in breaking up attacks in midfield.
The accurate passer is Sporting's captain and has been with the club since 2007.