Hamburg coach Thomas Doll and his players hugged each other after the Peruvian put in an 86th-minute cross to end the team's drought in the Champions League, Bundesliga and German Cup.

``Sometime that had to end, a series like that. The important thing is you have to believe in yourself,'' Doll said. ``We played our best match of the year.''

Guerrero levelled at 1-1 in the 71st minute when he finished a breakaway by tapping in.

It was Guerrero's first goal for Hamburg and turned around a match in which the team seemed set to self-destruct again as forwards missed wide-open chances and Juan Pablo Sorin had a headed goal ruled out for offsides.

Leverkusen's Andriy Voronin tapped in for a 1-0 lead in the 40th, helped by a Hamburg blunder. Defender Timothy Atouba collided with Sasha Kirschstein on a cross, knocking the ball out of the goalkeeper's hands.

Hamburg was helped by the return of several injured players, including captain Rafael van der Vaart, who had been out for two months. The win moved the team from 17th to 13th place.

FC Nuremberg and Eintracht Frankfurt also remained unbeaten in a 2-2 draw.

Frankfurt's seventh draw with only one win is a record to start the season, while Nuremberg's sixth straight draw after opening with two wins is a club record.

Ioannis Amanatidis and Albert Streit scored for Frankfurt, while Ivan Saenko and Horacio Pinola had Nuremberg's goals.

Also, it was: Borussia Dortmund 1, Bochum 1; Werder Bremen 3, Bayern Munich 1; Schalke 2, Hannover 96 1; Hertha Berlin 2, Borussia Moenchengladbach 1; Arminia Bielefeld 1, Mainz 05 0; Wolfsburg 1, Stuttgart 1; and Alemannia Aachen 1, Energie Cottbus 2.