Trainer Aidan O'Brien has won the King George four times in his stellar career and hopes Irish Derby hero Benvenuto Cellini can mix it with the older horses at Ascot this Saturday.
Source: [Sky Sports](https://www.skysports.com/watch/video/13566353/king-george-does-benvenuto-cellini-have-what-it-takes-to-win-ascot-test-as-a-three-year-old)