England's Reece James a doubt for Panama clash after solo training on Friday
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The 26-year-old right-back picked up a hamstring injury during Tuesday's goalless draw with Ghana, leaving his availability for their final group game at New York New Jersey Stadium on Saturday unclear.
James has been a key figure under manager Thomas Tuchel and has started both of England's World Cup matches so far.
England top Group L on goal difference over Ghana and lead Croatia, whom they beat 4-2 in their opening game, by a point. Panama are last in the group on zero points.