Dasaolu on 'amazing' sprint progress

Sprinter James Dasaolu reflects on his "amazing" performance at the national trials, where he ran the second-fastest 100m time in British history.

The Croydon Harrier credits his "first full winter uninjured" for the breakthrough time of 9.91 seconds and is hopeful that "faster times will come".

Dasaolu also talks of the "goose bumps" he got when racing at London 2012, as he looks forward to competing on Friday in the Anniversary Games.