Retiring Sydney Roosters skipper Anthony Minichiello insists he’s not concerned about his form and has put his poor performance against North Queensland last week firmly behind him.

The 34-year-old fullback will make his 301st appearance in Roosters colours in Friday’s NRL preliminary final clash with South Sydney and admits the prospect of it being his last ever game has crossed his mind this week.

However, Minichiello said his mistake that led to a Robert Lui try in last Friday’s astonishing 31-30 win over a Cowboys side that had trailed 30-0 was something he hadn’t dwelled upon.

“Last week has gone now, straight after the game your focus is on the next game,” Minichiello said.

“It’s a big challenge for us against Souths and that is all I am worried about.

“My confidence is fine. I have made a couple of mistakes in recent games but you have to put them straight behind you.”

The former Test and NSW star has enjoyed a stellar career that saw him crowned the best player in the world nine years ago and been a consistent performer for the Roosters since debuting in 2000 as a 19-year-old.

But for the first time his displays have come under the microscope, with Penrith playmaker Jamie Soward saying he targeted Minichiello in the Panthers’ recent win over the Roosters.

“I always mark myself hard, I have done my whole career,” Minichiello said.

“No one is perfect, everyone makes mistakes. I don’t really read the papers. If you start worrying about everything outside the game then you are going to get into trouble.”