Ireland captain Johnny Sexton says he is "good to go" ahead of Sunday's Guinness Six Nations meeting with Italy.

The out-half was speaking a remote press conference this afternoon, confirming that he has overcome the hamstring injury that saw him ruled out of the France defeat.

"Good to go, thankfully, trained fully at the back end of last week," the 36-year-old told RTÉ Sport.

"I did a day with the physios when we played the Under-20s so good to go."

Joey Carbery started his first championship game in Paris, while Jack Carty came on as a late replacement in the 30-24 loss.

Second row Iain Henderson, meanwhile, will miss the game after a positive Covid-19 test.

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Asked about if his preparation for training had changed much as one of the more experienced squad members, he said: "Yeah, of course It's something, as an older athlete, if you want to call me that, or a rugby player, you need to look after yourself well and better.

"I don’t think I could have done much different in terms of my preparation or warm-up or whatever. It’s just one of those things.

"Maybe I was carrying a knock from the Wales game that I was trying to train with that could have had a bearing. You just don’t know for sure.

"I was hoping it wasn’t too bad and we went for a scan and it was bad enough to rule myself out of the game.

"It was a minor enough thing and I bounced back well from it. I had some good training at the back end of last week and then fully today.

"I got some kicking in as well last week and this week so in a good place and fit for selection."

Sexton insists he's well used to competition for his place but the emergence of Carbery sees the Ireland captain face a stiffer battle.

Pointing to his rivalries with former Leinster out-half Felipe Contepomi, Ronan O'Gara, Ian Madigan and Paddy Jackson at Ireland, the 36-year-old, who has recovered fully from a hamstring injury that saw him miss the Guinness Six Nations match against France, said it's nothing new.

"Look, I’m well used to competition, I’ve had it my whole career," he said.

"Early doors with Ronan O’Gara and Felipe in Ireland and in Leinster. And then, when you get the jersey, you have always someone else that you’re competing with.

"Over the years (there has been) Ian Madigan, Ian McKinley, Paddy Jackson, Joey.

"Joey’s been around a long time. He’s 26 now so I’ve been used to it for the last five years. It’s nothing new, nothing’s changed for me.

"What’s important to me is to make sure I prepare as best as I can. There’s no point in worrying too much about what other people are doing.

"Of course, I respect all other 10s. You just have to focus on yourself and make sure you’re fit and firing when you do get the chance to play."

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Follow all of Ireland's Six Nations games via our live blogs on rte.ie/sport and on the RTÉ News App or listen to live radio coverage on RTÉ Radio 1. Watch live coverage of England v Wales on Saturday 26 Feb (4pm) on RTÉ2 and RTÉ Player. Highlights on Against the Head, Mondays, 8pm.

Follow Ireland v Italy (Sunday, 3pm) via our live blog on rte.ie/sport and on the RTÉ News App or listen to live radio coverage on RTÉ Radio 1. Highlights on Against the Head, Mondays, 8pm.