Munich - Bundesliga debutants SC Paderborn are used to being dubbed as underdogs in Germany's top flight, but nowhere has the tag seemed more appropriate than ahead of their Matchday 5 encounter away to record German champions FC Bayern München on Tuesday evening (kick-off: 18:00 GMT/20:00 CEST).

bundesliga.com has the pre-match lowdown ahead of their meeting at the Allianz Arena...

Few would have predicted this to be a top-of-the-table clash prior to the start of the season, but that is exactly what is in store for fans on Tuesday night. Both sides are unbeaten so far this term, having each won two and drawn two of their opening four fixtures.

The hosts have several big-name stars still out of action, with Javi Martinez (cruciate ligament), Franck Ribery, Bastian Schweinsteiger, Thiago and Holger Badstuber all on the sidelines. However, (r.), who pulled out of the encounter with Hamburg in the pre-match warm-up last weekend, is available for selection.

Paderborn likewise have a well-stocked treatment room. Playmaker (l.), Mahir Saglik and Rafa Lopez are all lacking match fitness, Marvin Bakalorz is sick, while Thomas Bertels (foot) and Tim Welker (hand) are out injured.

Yet to hit their stride as a collective unit, one man Bayern can always rely on to perform is the tireless . He has run further than any of his team-mates so far this term (46.7 km) and his knack for finding space up front will no doubt cause the guests some headaches.

scored a breathtaking goal against Hannover last weekend, but his value to the side is his presence in midfield. The 27-year-old has more top-flight experience (48 games) than any of his colleagues, is yet to miss a minute of action this season and has completed 80 per cent of his passes.

Bayern coach Pep Guardiola: "Paderborn are very aggressive. I watched one or two of their recent games and soon realised why they're top of the Bundesliga."

Paderborn coach Andre Breitenreiter: "We want to perform as best we can in Munich and give it everything we've got. The boys should enjoy the game."

Injuries have contributed to Bayern München's lack of rhythm, while their return of eight points from the 12 on offer so far this season is disappointing for a club of their ambitions. By way of contrast, Paderborn have the same total - a superb start for the unfancied top-flight debutants.

This will be the first time Bayern München and Paderborn, who are enjoying their first year in the Bundesliga, have met in a competitive fixture.

Possible line-ups:

Bayern: Neuer - Boateng, Benatia, Alaba - Rafinha, Lahm, Alonso, Bernat, Götze - Müller

Paderborn: Kruse - Wemmer, Strohdiek, Hünemeier, Brückner - Koc, Rupp, Ziegler, Vrancic, Stoppelkamp - Kachunga

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Check out the must-see wonderstrike from Paderborn's Stoppelkamp on Matchday 4, courtesy of the Bundesliga's official YouTube channel: