Rocky Flintoff, centre, has been playing for Lancashire's second team since regaining fitness from an injury which ruled him out of the U19s World Cup last winter [Getty Images]Rocky Flintoff has returned to the England Under-19s squad for their three-match one-day international series against South Africa.Flintoff, who is the son of ex-England all-rounder Andrew, missed England's run to the final of the U19s World Cup earlier this year because of injury.The 18-year-old is joined in the squad by