Bonn - Usain Bolt believes he can better his world records over 100- and 200 metres and would like to be the first sprinter to run the longer distance under 19 seconds.
"World records are always there to be broken. I am sure the times over 100- and 200 metres can still be improved," the Jamaican sprint star told Germany's General-Anzeiger and Koelnische Rundschau newspapers published on Wednesday.
Bolt said if he could go under 19 seconds for the 200 metres it would be difficult for the next generation to beat.
The 28-year-old Olympic and world champion over the distances holds the 100m world record of 9.58 seconds an 200m best mark of 19.19 seconds.
Bolt says he plans to stay with the two sprint distances and not attempt the long jump because of the additional injury risks involved.