Quade Cooper has apologised for an expletive-laden tweet he sent out after Australia's win over Argentina on Saturday.
The Wallaby fly-half is believed to have been reacting to an article by New Zealand writer Chris Rattue, who had laid into Cooper after last week's game against South Africa.
Cooper later deleted his tweet and apologised for responding to the criticism.
Apologies for any offensive language used on my Twitter feed.. I appreciate the support
— Quade Cooper (@QuadeCooper) July 26, 2015
"As footballers, we're still human beings. We've got feelings," he told Australian media at the Wallabies' Mendoza hotel on Sunday.
"I bit back at a bit of criticism and I used some language that probably shouldn't have been used. There was some online criticism directed at me personally.
"I've never been one to read into media but this one time it caught my eye. I'm disappointed in myself for getting trapped in that. At the end of the day, it got to me this one time."