COLOMBO (AFP) - Ricky Ponting warned Australia on Sunday that the defending champions must learn the harsh lessons of their shattering defeat to Pakistan if they want to stay in the World Cup. Australia lost by four wickets to Shahid Afridi's men, a defeat which ended their 34-match unbeaten streak in the tournament stretching back to the 1999 edition. It could also mean they face a titanic struggle against India in the quarter-finals. Australia went down by four wickets in a hard-fought Group A clash, bowled out for just 176 against a spirited Pakistan bowling attack which was led by Umar Gul who took 3-30. Paceman Brett Lee raised hopes of an Australian victory with four wickets but Pakistan pulled off the win, and took top spot in Group A, with nine overs to spare. Umar Akmal, with an unbeaten 44 and a gritty 46 from Asad Shafiq, laid the foundations for a Pakistan win. "We have to learn from the defeat and we have to learn quickly," said Ponting. They seem likely to face title favourites India at Ahmedabad on Thursday. "If we play India in Ahmedabad, then you can guarantee the same situations are going to pop up again, and well have to handle them a whole lot better than we did against Pakistan," said Ponting. The Australian captain, whose team are chasing a fourth successive world title, believes the loss of the 34-match unbeaten record will not hurt his team. "I know for a fact the guys havent been thinking about the streak at all, because it hasnt been mentioned around our group," he said. "I think the fact that weve played a good Pakistan team and weve come up short will get all the guys thinking just exactly what they need to be thinking about and the way they need to play to win WC games." Ponting believed Australia failed to put up a fighting total on a two-paced R. Premadasa stadium pitch.