After a goalless first half, Jose Guerrero broke the deadlock on 71 minutes when he took advantage of a Manuel Neuer blunder.

Four minutes after, the Peruvian hitman diverted a Marcell Jansen cross into the net from close range.

Jefferson Farfan netted a dubious goal for Schalke ten minutes from the final whistle after connecting with a Kevin Kuranyi cross.

The visitors called on the referee to disallow Farfan's strike for offside, but to no avail.

Fourth-placed Hamburg are now on 48 points, whereas Schalke remain eighth with 37 points.