Munich - Things are hotting up at the bottom end of the table, with a cluster of clubs bunched in or uncomfortably around the relegation zone. At the other end, Borussia Dortmund are back to their old winning ways, while FC Bayern München's remain on-going.

bundesliga.com presents some of the most interesting stats ahead of Matchday 22...

made a bit of club history when he came off the bench to bag a hat-trick as Eintracht Braunschweig beat fellow strugglers Hamburger SV on Matchday 21. The 29-year-old striker also became only the seventh Bundesliga substitute ever to score three times - and the first since Miroslav Klose for Bremen at Bochum back in 2004.

1. FC Nürnberg's has netted five goals in the first four games after the restart, making him the top scorer of 2014, and he has notched an impressive eight times away from home. The Switzerland international is already just one shy of his total haul for the first half of the season.

The first task facing new Hamburger SV head coach Mirko Slomka is to try and halt the team's seven-game losing streak when they take on Borussia Dortmund. None of Slomka's six predecessors lost their first game in charge of the Red Shorts.

No other Bundesliga fixture down the years has produced as many goals as that between Hamburg and Dortmund (337). The last five games alone have seen the ball hit the net 28 times - eleven of them to HSV's benefit, with BVB scoring 17 in response.

Dortmund winter signing marked his debut in high style with a goal all of 17 seconds after coming on as a sub, to round out a 4-0 victory over Eintracht Frankfurt. He thus became only the fifth player to score inside the first minute of his Bundesliga career.

With 19 wins and two draws, FC Bayern München have the best 21-game balance in the history of the Bundesliga. They are also, lest we forget, 46 games unbeaten in the league.

stint off the bench against SC Freiburg was his 310th top-flight appearance, all of them for FC Bayern. That takes him up to joint-tenth place in the Munich club's all-time rankings, alongside current chairman Karl-Heinz Rummenigge.

With currently sidelined, Bayern keeper has the opportunity to draw level this weekend with the French midfielder's individual record of 44 consecutive Bundesliga games unbeaten, and counting...

Pierre-Emerick Aubameyang's brace against Eintracht Frankfurt was the fourth game this season in which the Dortmund forward has scored two or more goals. He is now on 13 for the season and, of all the players to have turned out at least 20 times in the top flight, is second only to Gerd Müller in terms of effectiveness. The FC Bayern legend averaged a goal every 105 minutes (over the course of 427 matches, it has to be noted), while Aubameyang has managed one every 108 minutes so far.

The top 5 goals from former Hamburger SV player and manager Felix Magath courtesy of the official Bundesliga YouTube channel: