England midfielder Jordan Henderson has emerged as an injury doubt for Wednesday's World Cup semi-final with Croatia.
Henderson has started all but one of England's matches during their run to the last four but faces a race to be fit in time for their first semi-final appearance at a World Cup since 1990.
The Liverpool midfielder is suffering from a tight hamstring and will be carefully managed ahead of Wednesday's crucial showdown with Croatia.
The England squad returned to training at their Repino base on Monday following Saturday's triumph and have a quick turnaround before Wednesday's match at the Luzhniki Stadium.
Henderson is currently on a run of 30 matches unbeaten for England, which is the longest streak of any player in the country's history.