I think it is because it is supposed to be being tested that no-one else is here.
I guessed Simba would be the victor. Personally, I think it is unlikely that the other one was a female. Biologically/logically it wouldn’t make sense for a female to fight back to that extent. But never say never! Here it is mostly males around at the moment. The ‘regular’ girls haven’t returned, and they don’t tend to until later than the boys.
I haven’t seen poor Tigger for the last few nights, except on the camera. He is one of the poor chaps who have excessively large blobs of who knows what on him. Apart from anything else, It is counter productive putting such large areas on the poor hogs. It limits the numbers of variations you can make, etc.