Cologne - It was business as usual for Bundesliga leaders FC Bayern München on Matchday 7, but it was another weekend to forget for faltering Borussia Dortmund.

bundesliga.com collates the top five talking points to emerge from the latest round of action in Germany's captivating top flight...

FC Bayern's resounding 4-0 win at home to Hannover 96 ensures the defending champions go into the international break four points clear of the chasing pack. Pep Guardiola's men have now won all four of league games at the Allianz Arena so far this term, with their last domestic defeat on home soil coming against Borussia Dortmund towards the end of the 2013/14 campaign on 14 April.

Hamburger SV have a habit of upsetting Borussia Dortmund, and so it proved on Saturday afternoon as Josef Zinnbauer's charges recorded their first win of the season at the seventh time of asking. Pierre-Michel Lasogga grabbed the all-important goal that lifted the northerners off the foot of the standings, whilst leaving 13th-placed BVB without a win since Matchday 3.

Jürgen Klopp was understandably raging after his Dortmund side fell ten points behind Bundesliga leaders Bayern as a result of Saturday's surprise defeat. BVB have now lost four times in the league this term, conceding 12 goals in the process, in what's been their worst start to a season since 2009/10's meagre return of six points, six goals for and 13 against from their opening seven games.

TSG 1899 Hoffenheim are one of the sides to benefit from Dortmund's mini slump. Tarik Elyounoussi and former Royal Blue striker Adam Szalai were on target as the Sinsheimers secured a 2-1 win over FC Schalke 04 to extend their unbeaten start to the season to seven matches, with Bayern, Gladbach and Mainz the only other clubs yet to taste defeat in 2014/15.

The exertions of playing in Europe got the better of a Bundesliga quartet upon their return to domestic action. Leverkusen beat Benfica 3-1 in the Champions League but could only draw 2-2 with Paderborn, Dortmund slumped to defeat against HSV after a 3-0 away win in Anderlecht, Schalke lost in Hoffenheim following a midweek stalemate with Maribor and Gladbach were held by Mainz after drawing in Zurich. Only Bayern and Wolfsburg shook off the continental hangover with league victories on Matchday 7.