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).

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.

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100 – Immanuel 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.

4 – Josip 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.

13 – 13 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.