Wales captain Sam Warburton has praised the performance of his defensive teammates during their victory over Ireland earlier today.
Despite seeing his side run in three tries during the 22-10 win, Warburton believes that it was the team's performance in their own half which sealed progression through to the semi-finals.
"It was a massive performance, we knew they had a lot of big ball carriers and there was a lot of tackling stopping them on the gain line," he said.
"They are dangerous, it was a fantastic defensive effort."
The 23-year-old has become the youngest player to captain his country at this year's World Cup.