Winger Zac Guildford has pulled up lame at an All Black training session with a suspected twinged hamstring.

The Hawkes Bay winger, who scored four tries in the All Blacks matchup with Canada on Sunday, had to end training early.

He told media the injury may be a hamstring strain and he would get it checked by team doctors today.

Meanwhile Daniel Carter's replacement in the squad, Aaron Cruden, is hoping he may see some game time off the bench during the tournament.

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Cruden says at the moment he's just putting his head down and working hard in the hope the coaches may use him.

Richie McCaw played a limited role at today's training as he nurses an injured foot ahead of Sunday's quarterfinal against Argentina.