Dortmund - Borussia Dortmund are aiming to celebrate more than just their 200th appearance in European competition on Wednesday night (kick-off 19:45 GMT/20:45 CET) as they look to book their place in the quarter-finals of the UEFA Champions League against FC Zenit St Petersburg.

Despite boasting a 4-2 first-leg advantage, BVB head coach Jürgen Klopp has urged his side not to become complacent as they seek a 100th victory on the international circuit. “Ideally we’d go into this game as if it were the second half of an encounter,” said Klopp. “The first leg provides a foundation for the second, nothing more.”

Reus adds to injury woes

Dortmund have lost their last four domestic matches preceding a European tie, the latest a 2-1 defeat on home soil against Borussia Mönchengladbach, and many are questioning whether the distraction of European football is hampering BVB’s league form. “I don’t think we already had our minds on the Champions League,” countered centre-back Mats Hummels. “The loss to Gladbach had nothing to do with a lack of desire or quality. We didn’t put in a great performance and were sorely missing our creative players.”

Wednesday evening should see the return of one such playmaker with Henrikh Mkhitaryan, suspended on Saturday, ready to slot in behind striker Robert Lewandowski. However, the news was not as promising for winger Marco Reus. “He wasn't able to take part in first-team training today and will therefore play no part against Zenit unfortunately,” said Klopp, who is already without first-team regulars Neven Subotic, Sven Bender, Ilkay Gündogan and Jakub Blaszczykowski.

Borussia’s bonus points

With those absences in mind, Hummels urged his team-mates to be on their guard despite the guests needing a 3-0 victory or equivalent to reach the next round. “We’ve got to be vigilant,” said the 25-year-old German international. “This isn’t going to be a walk in the park. They boast an enormous amount of quality within their ranks, especially up front. The first leg has put us in a great position, though, and we know we’ll be able to threaten on the counter.”

The omens are good for the Schwarz-Gelben, who have progressed 11 of the 12 times they have won on the road in the first leg of a European fixture. Klopp also believes last year's impressive run to the continental final can only benefit his players. “We’ve got some experience of the Champions League knock-out stages,” said the charismatic coach. “We’re not going to risk everything going forward, but we’re not only going to defend either. We’ve reached our goal by getting out of the group. Everything else that follows is a bonus.”

Possible line-ups:

Dortmund: Weidenfeller - Piszczek, Sokratis, Hummels, Schmelzer - Kehl, Sahin - Aubameyang, Mkhitaryan, Großkreutz - Lewandowski

Zenit: Lodygin - Anyukov, Hubocan, Lombaerts, Criscito - Witsel, Zyryanov - Hulk, Fayzulin, Shatov - Rondon

James Thorogood