Australia captain Ricky Ponting's frustration over a TV referral decision tipped over into a heated argument with umpire Aleem Dar on the second day of the fourth Ashes Test at Melbourne on Monday.
Ponting, whose team face a mountain in trying to save the Test and keep alive their hopes of winning back the Ashes, spent more than a minute tangling with Dar after demanding a review of a not-out decision against England batsman Kevin Pietersen.
Wicketkeeper Brad Haddin had made a vociferous appeal for caught behind, certain that Pietersen, who was on 49, had nicked the ball from fast bowler Ryan Harris.
A review of the decision revealed no 'hot spot' where the ball passed Pietersen's bat, but a infuriated Ponting, who was joined by girating seamer Peter Siddle, argued long and hard with Dar. The confrontation prompted jeers from the crowd.
Pakistani Dar, widely regarded as one of the best umpires in world cricket, later called on the technology to save England's Matt Prior after he was caught behind.
Prior, who was on 5, walked but was called back to the crease as Dar consulted the third umpire, whose review of the footage showed pacer Mitch Johnson had actually bowled a no-ball by dropping his foot in front of the popping crease.
Pietersen made just 2 more runs after the first appeal before falling lbw to the fired-up Siddle, but Prior went on to form an ubeaten stand of 158 with Jonathan Trott at stumps on Day 2.
Ponting, who has been critical of the referral technology being used for the first time in an Ashes series, could be fined part or all of his match fee for arguing with the umpire.