There he won both the 100m and 200m gold in the T12 category .
Michalski 's first major international success came at the 2011 IPC Athletics World Championships in Christchurch , New Zealand .
There Michalski won both the 100m and 200m gold in the T12 category .
Michalski 's first major international success came at the 2011 IPC Athletics World Championships in Christchurch , New Zealand .