I do believe that the second and third placers still wrestle the scheduled district but on the opposite side of the first and fourth placer. I am not totally sure but something like this.

D1- first
D4 -fourth

D2 third
D3 second

D3 third
D2 second

D4 first
D1 fourth
and the opposite on the other side.

I am not 100% sure but this would assure that the district placers are divided evenly!