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England co-captain Hartley could miss most of Six Nations

LONDON (AP) England co-captain Dylan Hartley could miss most of the Six Nations because of a knee injury.

Hartley has not played since Dec. 21 because his knee is "grumbling," according to his Northampton club.

It's serious enough that Hartley was left out of England's 35-man squad for the championship announced on Thursday. He will miss the training camp in Portugal this week and the first two matches next month against titleholder Ireland and France.