![Usain Bolt training at Albert Park.](/web/20170203014320im_/http://www.smh.com.au/content/dam/images/g/u/4/2/e/k/image.related.wideLandscape.620x349.gu438b.png/1486035250327.jpg)
Bolt coy on what event he'll run - but he will run
Usain Bolt's presence for Nitro athletics has ensured that Channel Seven will broadcast the series – on Saturday night it will be live in Sydney and Perth but in Melbourne it will be on delay after the AFL women's match.