Cologne - Unbeaten head coaches, new personal bests and broken club records can only mean one thing: Another set of nine Bundesliga fixtures have come and gone, giving fans of Germany’s top flight a whole host of new facts and figures to comb through.

bundesliga.com has picked out the best of the bunch for your reading pleasure...

4 – At least one player has been sent off in each of the five Rückrunde Matchdays, while the four red cards shown this weekend is a new high for 2015.

6 – 1. FSV Mainz 05 head coach Martin Schmidt became the sixth newly-instated head coach to remain unbeaten upon making their debut in the 2014/15 campaign. Kasper Hjulmand’s replacement followed in the footsteps of Viktor Skripnik, Pal Dardai, Huub Stevens and Roberto Di Matteo in picking up a victory - beating Eintracht Frankfurt 3-1. Josef Zinnbauer, meanwhile, guided his side to a 0-0 draw with FC Bayern München in his first game in charge of Hamburger SV.

1 – Martin Schmidt is the first head coach to make a winning start to his reign at the Mainz helm. Thomas Tuchel and Hjulmand only managed to pick up a point, while Jürgen Klopp lost on his debut.

11 – Eintracht Frankfurt once again failed to win a league game in Mainz at the 11th time of asking (seven draws, four losses).

10 – Taking into account their 3-2 win on Friday, Borussia Dortmund have lost none of their last 10 encounters with VfB Stuttgart (five wins, five draws). The last defeat they suffered against the Swabians occurred five years ago.

8 – Stuttgart have failed to win any of their last eight home games in the Bundesliga, equalling a 48-year-old club record.

18 – 22 games into the season and Stuttgart only have 18 points to their name - that is the club’s worst-ever tally at this stage of a campaign.

7 – 1. FC Köln are without a win in seven outings on their own patch (four draws, three losses) - the last time that happened during a single season was six years ago under Christoph Daum.

6 – Paderborn suffered the biggest defeat of their relatively short Bundesliga career, conceding six goals for the first time in their debut campaign.

7 – A penalty was awarded against Paderborn for the 7th time this season . No other team has conceded so many penalties.

16 – After taking just a point from their opening two games of the Rückrunde, FC Bayern have now collected three straight wins, scoring 16 goals and conceding none.

17 – After bagging a brace in FC Bayern München’s 6-0 win over SC Paderborn 07, Arjen Robben has now scored at least once against all 17 of the league leaders Bundesliga opponents.

16 – The Dutch dangerman has struck in four consecutive encounters and, having netted his 15th and 16th goals of the current campaign, has now matched his personal best goalscoring tally in a single season, set in 2009/10.

100Immanuel Höhn scored his first top-flight goal in his 39th Bundesliga appearance. Breaking the deadlock in the 1-1 draw with TSG 1899 Hoffenheim saw the centre-back become SC Freiburg’s 100th different goalscorer in the Germany’s top flight.

10 – SC Freiburg shared the spoils for a 10th time this season, equalling a club record after just 22 Matchdays.

400 – Hannover 96 took the lead in a Bundesliga match for the 400th time in the 1-1 draw with Köln.

1989 – For the first time since May 1989 a league encounter between Köln and Hannover failed to produce a winner.

3Marwin Hitz became only the third goalkeeper in Bundesliga history to score from open play by netting a last-gasp equaliser against Bayer 04 Leverkusen. Jens Lehmann (on 19 December 1997 for FC Schalke 04 in a 2-2 draw with Borussia Dortmund) and Frank Rost (on 31 March 2002 for SV Werder Bremen in a 4-3 win over FC Hansa Rostock) were the previous No1 to hit the back of the net.

4Josip Drmic’s opener in the 2-2 draw with FC Augsburg was his fourth goal of the season, drawing him level with star striker Stefan Kießling. However, Drmic has only made three starts in 2014/15, while Kießling has been in the first XI 20 times.

12 – For the 12th time this season, Zlatko Junuzovic took a set-piece that led to a goal in the 1-1 draw with FC Schalke 04 - a league best.

1313 points from the opening five games of the Rückrunde represents Bremen’s best start to a second half of the season since 2003/04 when they went on to clinch the Bundesliga title.

8 - Already for the eighth time this season, Wolfsburg scored with their first shot of the game, including four of their five games in 2015.

9 - Bas Dost (r.) has already scored nine goals in 2015, scoring alone more goals than 12 of the 18 Bundesliga sides since the winter break.

13 - Wolfsburg have picked up 13 out of a possible 15 points in 2015.