The American athlete Tatyana McFadden has won her fourth gold medal at the IPC Athletics World Championships in Christchurch.
McFadden has added the 400 metre T54 title to the 200, 800 and 1500 victories, while she also won bronze in the 100.
South African Oscar Pistorius won his 400 metre event.
In total 50 World records and 125 Championship records have been set so far.
