Opposition players missings

Dergview had one man sent off, but when I went to check their tactics I expected them to be playing a 441, not this....

It depends on the timing of the injury and sending off..

They have 4 players off and only 2 came on,it could be they still had to send on a sub for either the red card or injury thus using all there subs and there for would be down by 2 men.

Just to add there tactics would have changed after the subs...the same as your would.