Australia Test cricket captain Pat Cummins has emphatically denied any knowledge of sandpaper being used in the 2018 Test against South Africa in Cape Town.
Former Test batsman Usman Khawaja claimed in his new book that 'everyone' involved in that series had knowledge of ball tampering.
Cummins, who bowled in that series, has unequivocally rejected that in a press conference and called the claims 'complete and utter nonsense'.
"When he says 'we all knew', if that he means we knew sandpaper was going out on the field, he's 100 per cent wrong," Cummins said.
"I said that consistently for the last eight years. I did not know that was happening."
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Cummins says he didn't see anything strange on the ball
Khawaja's book speaks about using sandpaper on the ball in the sheds and seeing massive swirls on the ball.
Cummins says he didn't see anything that extreme during the game and that bowlers don't always take that much care of the ball aside from bowling with it.
"I can see how people draw the assumption that bowlers must be coming up with the ideas. It's not how it happens.
"The keeper throws it to mid-on, you are trying to get the least amount of hands, particularly sweaty hands, on it.
"A lot of time it falls on the batters. I can see why people think bowlers bowl, so they must manage the ball. It's not the case."