David Weir surprises his biggest fan, Kieran
24 July 2014 Last updated at 09:45 BST
Kieran is 15 and has cerebral palsy.
Recently he and our reporter Martin headed to Glasgow to have a look around some of the venues that will be used in the Commonwealth Games.
While he was there he had surprise visit from a very special person: his hero, Paralympic gold medallist David Weir.
Kieran is a member of Generation 2014, a group of young Scottish people the BBC is following in the run-up to the Scottish Referendum on 18 September.