Cologne - Borussia Dortmund visit Hertha Berlin on Saturday (kick-off 15:30 CET/14:30 GMT) knowing they are by no means out of the woods yet as they continue their long, arduous climb up the league table. takes a closer look at this weekend's battle in the capital...

"We're in a relegation battle," said Dortmund coach Jürgen Klopp (pictured), "we've got to face up to that." Those words sum up the stakes of this clash in the capital with both teams sitting just a single point above the drop zone and in need of the points to put some daylight between themselves and bottom three.

Jos Luhukay faces a choice between and in his defence while attacking midfielder (pictured, r.) could be in line for a return. Up front, Salamon Kalou and Julian Schieber are the candidates to lead the attack.

The Dortmund treatment room is not as full as it has been recently with and the only big-name occupants. Mitchell Langerak has been confirmed between the posts while (pictured) could be given a chance up front ahead of former Hertha forward Adrian Ramos.

Although rested by Jos Luhukay in recent games, is Hertha's leading goalscorer and the man they can rely on most to breach the Borussia Dortmund defence at the Olympiastadion. The 29-year-old has settled in quickly by scoring five league goals in just under 700 minutes, despite various fitness problems.

Mitchell Langerak is the name on everybody's lips after he ousted Roman Weidenfeller as Dortmund's new number one, at least until January, on Matchday 14. His clean sheet a week ago augurs well for a stabilised defence, and he famously kept goal in 2012's DFB Cup triumph over Bayern at the Olympiastadion.

Klopp: "We need stability. It's about building up our confidence. This is a relegation battle."

Kalou: "I understand being left out after the team won in Cologne without me, but I hope to play again now."

Dortmund finally got back to winning ways in the Bundesliga by beating Hoffenheim last weekend and they added a draw with RSC Anderlecht in the UEFA Champions League in midweek to boost spirits after a dismal run of form. Berlin have lost their last two by just one goal since beating Köln.

Borussia have a particularly good record in the capital, winning 16 of their 27 games and drawing seven. Their last defeat at the Olympiastadion, excluding a DFB Cup final against Bayern, was in 2007, while they triumphed 4-0 there last season. Hertha did win on their last two visits to Dortmund, though, and will look to replicate that form.

Possible line-ups:

Hertha: Kraft - Pekarik, Hegeler, Brooks, Schulz - Hosogai, Skjelbred - Beerens, Ronny, Ben-Hatira - Kalou

Dortmund: Langerak - Piszczek, Subotic, Hummels, Schmelzer - Bender, Kehl - Mkhitaryan, Gündogan, Aubameyang - Immobile

Find out where you can watch Saturday's game with our list of broadcasters

See how Dortmund took off again on Matchday 15, and what it meant to them in this video courtesy of the Bundesliga's official YouTube channel.