Labbadia did not even last a full season with Hamburg before an acrimonious split three games before the end of the season saw him out of work for eight months before joining Stuttgart in 2010.
After coming away with a point from a meeting with Bayer Leverkusen, the side Labbadia coached before joining Hamburg, he is now hoping for the same or better in a game he is treating like just any other.
"I am relaxed about it," he said. "Every game is important and it is nothing extreme for me.
"We are under pressure in every Bundesliga game."
Labbadia let the pressure get to him a fortnight ago when he raged at the way his side is being treated by the German media.
But that, like his time in Hamburg, is water under the bridge.
"I had put that behind me already the day after," he said.
Labbadia will be without the injured Cacau on Sunday after the Germany international tore knee ligaments in training.
Hamburg star Rafael van der Vaart has recovered from a knock and should take his place in the side having inspired them to a four-game unbeaten run since arriving from Tottenham.
Those results have lifted the northern Germany club away from the bottom three, but coach Thorsten Fink knows things can turn awry just as quickly.
"Of course we have a better atmosphere now than during the bad start to the season, but we would be well-advised not to get too euphoric," he said.
"We know that we are just at the beginning of a cruise with a long round-the-world journey ahead of us."