The Socceroos star slammed in a 42nd minute spot-kick to give the home side the lead and when Baros doubled the advantage on 49 minutes, the Turkish team looked on course to progress. But it wasn't to be.

Jose Paolo Guerrero was the hero for the Bundesliga side as he struck twice to cancel out the home side's two-goal lead, established with Kewell's penalty and Milan Baros' goal three minutes into the second half.

Guerrero struck his first in the 57th minute and added a second moments later before Ivica Olic sealed Hamburg's passage to the last eight, where they join fellow German representative Werder Bremen, in the last minute.

Hamburg made a bright start with the first chance of the game falling to their striker Olic, whose dipping header was tipped over by Morgan de Sanctis.

At the other end, Joris Mathijsen was enjoying a physical battle with Baros as the Hamburg defence held firm against the home side's first advances.

Gala began to increase the pressure with Sabri Sarioglu hitting two shots over the crossbar.

Gala's persistence was rewarded with the opening goal in the 42nd minute, scored from the penalty spot by stand-in central defender Kewell after Baros was sliced down by Jerome Boateng just inside the area.

The goal did not alter the fact that Hamburg had to score, but now they knew that just one goal would not be enough to put them through.

In the 48th minute Arda Turan poked the ball into the path of Baros, who neatly lifted it over the onrushing Frank Rost and into the back of the net.

Hamburg's reaction was exemplary with two goals in as many minutes from Guerrero bringing them level - and giving them the advantage on away goals.

His first in the 57th minute came out of nothing with the Peruvian forward trying his luck from long range and beating De Sanctis with a fine shot into the top left-hand corner.

And moments later, he chose the other option of dribbling the ball in, leaving three Gala defenders standing on his way into the penalty area before firing a venomous shot past De Sanctis.

Olic then sealed the win, lobbing De Sanctis after reaching Marcell Jansen's through ball in the last minute.