Go to inside EA sports menu and press R2, circle, L2, R1, select.
During One-Day Matches a very easy way to get runs is to just simply block every ball and run singles. No fielders are close enough to run you out and there are no slips to catch an edge either. At this rate you can end up with a score of 300 in a 50 over match, a very competitive score.
When you are facing a Fast or Med-Fast bowler use a charge/advance power shot when the bowlers arm comes inline with 90 degrees of his head.