20-year-old Möregårdh equalized Spårvägen's 1-0 lead to 1-1 by beating Anthony Tran with 7-11,11-8,11-7,11-6.
There was no danger on the roof even though the first set was dropped.
- It was a tough match but it's a semi-final and that's how it should be.
I have had a hard time for him before, he goes for it and has tricky serves, and it was good to get a fairly clear 3-1 win, says Möregårdh to SVT Sport.
Möregårdh then closed the store by beating peer Martin Friis 3-0 and securing 4-1 in the team match.
On Friday, the second semis awaits in the best of three matches in Stockholm.
- There was absolutely no overtaking.
It has a tough team and a lot to go on when they play well but they got a little stressed in the crucial situations.
That was what we won because it was very even in many matches.