In the All Pick mode, where picks are revealed only after both teams have chosen their heroes, i have seen many people clearly counter-picking others.

I looked it and i found out you can do this using the console, but found no more information.

I searched some console commands, and saw a couple like "cl_net_showevents 2" that dump game information, but couldn't find any hero names in it.
Does anyone have some idea how to do it?