The margin for error has disappeared for England.With the FIFA World Cup group stage complete, the knockout rounds bring a new reality: If a match is tied after extra time, it will be decided by penalty kicks.England players said Monday they have been preparing for that possibility ahead of Wednesday's Round of 32 match against the Democratic Republic of the Congo in Atlanta.Forward Noni Madueke said taking a penalty requires more than just striking the ball well."I feel like a lot of it is...