Hamburg take top spot in Bundesliga on goal difference from Bayer 04 . Paolo Guerrero celebrates after scoring his second goal for Hamburg in the win over Cologne . Javier Guerrero scores twice in 2 - 1 victory at home to bottom club Cologne . Werder Bremen move up to third following a 3 - 2 win at struggling Hertha Berlin . Bremen join Schalke and Borussia Monchengladbach on seven points .
Hamburg take top spot in Bundesliga on goal difference from Bayer 04 . Javier Guerrero scores twice in 2 - 1 victory at home to bottom club Cologne . Werder Bremen move up to third following a 3 - 2 win at struggling Hertha Berlin . Bremen join Schalke and Borussia Monchengladbach on seven points .