"There was some contact in training and these things happen," he said.
"We have all been training hard and we try to give as much as we can for the team. We are all a bit anxious."
The team is expected to be named today and there is plenty of competition for places for the Pumas' opening match against England at Otago Stadium on Saturday.
"I remember four years ago I was in Biarritz training with my club and now I have the opportunity to be here and to be part of the action. That is what a rugby player wants.
"The last four years were tough. But going through that helps you, how do you say, appreciate it more and to know how much it costs to be here.
"2007 was a slap on the face and it woke me up a little bit.
"It helped me to train harder and to be a better player."
Like so many of his teammates, Carizza plays professional rugby in Europe.
He left Argentina and moved to France about six years to pursue a playing career with Biarritz Olympique.
Before that he was on a completely different course.
"I used to study medicine and did two years at university. But I left my country at the age of 20 and then I turned professional.
"I always say I'd love to be a doctor but I don't love to study," he joked.
In his spare time, he dabbles in graphic design and hopes to find employment in that area once his rugby career winds up.
He made his debut for the Pumas in December 2004 and has played 18 tests.
It does not seem like much experience but then the Pumas do not play a lot of test rugby.
Next year they will join South Africa, New Zealand and Australia in the Four Nations which will help the players gain more international experience.
It is Carizza's first trip to New Zealand.
The team arrived in Dunedin late last week and he has not had much opportunity to look around.
"Just training, the hotel and the gym - that's all."
- Otago Daily Times
