Paralympic champion Jonnie Peacock has insisted that he is "not worried" about rival Richard Browne's dominance in the T44 100m.
Browne extended his unbeaten streak to 23 races by winning gold in 10.96 seconds in the London Anniversary Games at the Olympic Stadium over the weekend.
Peacock, who was crowned Paralympic champion in this event three years ago, came second to the American after crossing the finishing line in 11.02 seconds.
"People are going to go unbeaten, but at the end of the day it will come round that people will get beaten. I'm not worried," PA quotes Peacock as saying.
The two sprinters will go head to head once again at the IPC World Championships in Doha in late October.