keywords: wolfsburg bayern bundesliga stuttgart germany
text: Wolfsburg stays on top in Germany with 4-3 win; Bayern, Stuttgart &lt;b&gt;...&lt;/b&gt; Bulgarian striker Martin Petrov scored all four goals and Wolfsburg rallied from a two-goal deficit to stay atop the Bundesliga with a 4-3 victory over newcomer Mainz, while Stuttgart and Bayern both lost Saturday.