Ten out of eleven players were substituted from the Champions League victory against Spartak Subotica until the home game against Hammarby.
Then Rosengård lost 5-1 and Hammarby took important points in the gold battle where they are now one point behind Häcken.
The reason was to focus on the CL qualifiers where there is a return leg at home on Wednesday.
"We have a big and good squad. We had the Champions League just a few days ago and have been travelling and so on. And a very important game against Sparta on Wednesday. Smart of the club," Olivia Schough said after the game.
Häcken's coach Mak Lind gives his view on Rosengård's move:
"First of all, it is clear that as coach of Häcken, I want other teams to do what they can to win their matches. But it's not something I'm counting on, that we'll get help," he says.
He explains why Häcken doesn't rotate in the same way at all.
"It's a tight match for Rosengård and for us. We choose to play with the best possible team and it has not only to do with the fact that we play for the gold in Damallsvenskan, but also that I think it can have some effect to not lose games or lose big.
"Maybe it's smart to rest players, but at the same time you don't know the effect of it for the next game.
How did you react when you saw that Rosengård rotated so much?
"It's their business. They do what they want, but I wish they had played with the best team possible. They chose to prioritize completely differently and in the Champions League they will know if it was right or wrong. A bit sad and unfortunate I think.