Frank Lampard's goal could not prevent an almost full-strength Chelsea from slipping to a 2-1 pre-season friendly defeat away to Hamburg on Wednesday night.
The England midfielder put the Blues ahead in the 24th minute, tapping Michael Essien's unselfish square pass into an empty net.
But Mladen Petric capitalised on a mistake by Yury Zhirkov, on at left-back for Ashley Cole, to beat Ross Turnbull with 18 minutes to go.
Worse was to come for the Barclays Premier League champions as Heung Min Son won it for Hamburg with just three minutes remaining, inflicting Chelsea's third successive loss of the summer following defeats to Ajax and Eintracht Frankfurt.
Carlo Ancelotti named a strong side for the game in Germany, with John Terry, Branislav Ivanovic, John Obi Mikel, Nicolas Anelka, Salomon Kalou and Florent Malouda all also featuring from the start, while Didier Drogba played the second half to make his first pre-season outing following hernia surgery.