RONAN O'Gara has admitted he is now playing World Cup catch-up after tearing his calf during pre-season training.
The Ireland fly-half has not done much running since picking up the injury to his right leg on July 1, but is expecting to return as Ireland reconvene at Maynooth's Carton House for the second session in camp.
Although the injury should not affect his New Zealand chances, with 58 days to go before Ireland kick-off against the USA on September 11, O'Gara is determined not to rush the injury after Jerry Flannery had his season ruined by calf problems last year.
"I hurt myself on the last day in Carton House," he said. "I tore my calf running. I just pushed the body so hard in the first week that I got a bit of a twinge. I'm nearly back, but I haven't done much running for the last 10 days.
"I'm playing catch-up -- most definitely the lads are ahead of me. They will have had four heavy fitness sessions on me and the sessions look really hard, so I'll have to make that up. But I wouldn't give too much thought to something like that."
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