Wales prop Aaron Jarvis also working out at hooker in training

Wales coach Warren Gatland is calm over only selecting two hookers in his World Cup squad with prop Aaron Jarvis also working out in that position.

Gatland bucked a trend by naming only Scott Baldwin and Ken Owens as specialist hookers, leaving some to question what he would do if one or both was injured during the tournament.

But Gatland feels most coaches will have to take a risk somewhere within their squad and predicting where injuries might hit is nigh on impossible.

Wales could conceivably add a third hooker to their resources during the competition - Kristian Dacey and Richard Hibbard would be options - but only if another squad member, regardless of position, suffers a tournament-ending injury.

If Baldwin or Owens are injured once the World Cup has started, then any replacement would have to be in Wales' camp for at least 48 hours before playing. The injured player, meanwhile, could not play any later World Cup role, once replaced.

"We are doing some stuff with Aaron Jarvis at the moment," Gatland said, confirming the Ospreys prop had been practicing throw-ins and packing down in the middle of the front row.

"Look, it's been highlighted that it's a little bit of a risk. Everyone is taking risks. The All Blacks have only picked three second rows, some teams have picked two nines and two 10s.

"In every team, you've got some sort of exposure somewhere. We've looked at it, and if one of our second rows goes down we would maybe replace them with a hooker.

"You've got to potentially have someone else to cover. That's the risk you take. We have weighed that up.

"It means if one of the hookers gets injured within 72 hours of a game, then you've got someone to cover, and then that hooker has got to get injured as well before you go to the final choice.

"You would be pretty unlucky if that ends up being the case, but we have got to make sure we plan for that.

"It's like everything, you've got to take a few punts and gamble a little bit. We know we are taking a bit of a risk here. Hindsight is a great thing, and hopefully we don't get caught out."