This time he overpowered swimming great Michael Phelps to win the 200 metres freestyle final in record time .
Germany 's Paul Biedermann has pulled off a second sensational coup at the world swimming championships .
This time Paul Biedermann overpowered swimming great Michael Phelps to win the 200 metres freestyle final in record time .
Germany 's Paul Biedermann has pulled off a second sensational coup at the world swimming championships .