Dai Greene aiming to run season's best in Rome

Reigning world 400m hurdles champion Dai Greene is aiming to "run a season's best" on Thursday in Rome at the Diamond League event as he builds towards London 2012.

Greene came second in his first race of the season at a World Challenge race in Morocco behind former Olympic champion Felix Sanchez, but tells BBC Sport's Mike Costello his opponents "know I'll bring my A-game when it comes to the Olympics" and he remains confident in his ability to "execute when it matters".