The Borussia Dortmund boss admitted his side were second best all afternoon but felt they at least put on an improved showing after the break
Jurgen Klopp was magnanimous in defeat following Borussia Dortmund's 3-0 defeat to Hamburg in the Bundesliga on Saturday.
In Mirko Slomka's first game in charge, the hosts put on a sparkling display, taking the lead three minutes before half-time thanks to Petr Jiracek's header.
Pierre-Michel Lasogga doubled the advantage on 58 minutes, before a 50-yard wonder-strike from Hakan Calhanoglu in stoppage-time put the seal on an emphatic Hamburg victory.
And Klopp chose to praise the hosts for their "deserved victory," although he did feel his side were "more lively" after the break.
"Congratulations to Hamburg for a well deserved victory," said Klopp.
"We wanted to change everything at half-time. We changed the system and we were more lively.
"Hamburg fought, we also fought, but ultimately we have not done enough to bring something away here.
"It was a very modest game for us."
The result leaves Dortmund in third, 17 points off league-leaders Bayern, though Schalke (one point behind) and Wolfsburg (three behind) are in hot pursuit.