England vs Australia: Jason Roy says he is happy to 'knuckle down' after match-winning ton against Tim Paine's men

Cardiff: England's Jason Roy believes he is adding an extra dimension to his game by "knuckling down" at the start of an innings.

The 27-year-old, long known as a brilliant ball-striker, made a polished 120 as England beat world champions Australia by 38 runs to win the second One-Day International (ODI) in Cardiff on Saturday and took a 2-0 lead in the five-match series.

Roy's innings, and a typically quickfire 91 not out from stand-in captain Jos Buttler, deputising after regular skipper Eoin Morgan suffered a back spasm shortly before the toss, took England to a total of 342 for eight.