England winger Theo Walcott tweaked a hamstring in a practice session .
England winger Theo Walcott is struggling to be fit for the final Group D match against Ukraine whose leading striker Andriy Shevchenko missed training with a knee problem and is also doubtful .
England winger Theo Walcott tweaked a hamstring in a practice session and is struggling to be fit for the final Group D match against Ukraine whose leading striker Andriy Shevchenko missed training with a knee problem and is also doubtful .