An incredible long-range goal from Jamal Musiala took Bayern Munich five points clear at the top of the Bundesliga table with a 1-0 win at St Pauli on Saturday
Leipzig's 2-1 loss at Dortmund last week, their first in the league this season, has given Vincent Kompany's Bayern the chance to grow their lead at the top of the table.
Despite the win, Bayern Munich still have work to do in Europe, with this season's Champions League final on home soil.
Jamal Musiala hit a first-half hat-trick as Bayern Munich won 4-0 at Mainz to move into the last 16 of the German Cup.
The international break seems to have come at just the right time for Bayern Munich, allowing the 2020 treble winners a chance to regroup under head coach Vincent Kompany.
Jamal Musiala was named in Julian Nagelsmann's squad on Wednesday for the games against Bosnia and Herzegovina and the Netherlands, but will play no part.
Bayern remain top of the Bundesliga table, two points ahead of RB Leipzig and three ahead of Leverkusen.
With Wirtz and Musiala both 21 and Havertz 25, the convincing win suggests Germany has the talent to overcome this summer's departures, two years out from the 2026 World Cup.
Harry Kane helped drag Bayern Munich to a come-from-behind 3-2 win at Wolfsburg on Sunday in new manager Vincent Kompany's Bundesliga debut.
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