New York: Nick Kyrgios has accused the ATP of being corrupt in a sensational aftermath to his US Open first-round victory and a move that is bound to have further repercussions for the volatile Australian.

Having just staged an impressive but at times fiery three-set victory over American Steve Johnson at Flushing Meadows, the tennis firebrand was asked what he thought about being fined $US113,000 ($167,000) – believed to be the biggest fine dished out in the sport – for his ugly meltdown in Cincinnati this month.

"The ATP is pretty corrupt anyway. I'm not fussed about it at all," he said in a development that will almost certainly force the governing body of men's tennis to suspend the Australian, having already declared it was considering such a move.

When Kyrgios was asked if he should have been defaulted at the Cincinnati Masters and, therefore, avoid being fined, the Australian engaged in an exchange with a journalist as his agent John Morris and an ATP press official tried to cut short the post-match media conference in the early hours of Wednesday morning in New York.