Robbie Henshaw believes competition for places is helping Ireland's players get "the best out of each other" in their Six Nations campaign.

Led by interim head coach Simon Easterby, the back-to-back champions remain on course for a third title in succession after opening wins over England and Scotland and will secure the Triple Crown with victory over Wales on Saturday.

Henshaw started against Scotland after coming off the bench against England with Easterby also able to call upon Bundee Aki and Garry Ringrose for his midfield spots.

The trio have rarely all been fit for the duration of the same Test window but the 31-year-old says the switches in personnel have been "seamless" so far.

"We know each others' strengths inside out at this stage," he said.

"A lot of work goes on to make sure everyone is singing off the same hymn sheet.

"Everyone is delighted to have contributed in the first games. We're always pushing the bar to keep improving each other and keep getting the best out of each other."

Ireland will be without captain Caelan Doris due to a knee injury, but Henshaw thinks the side have an able replacement in the shape of Jack Conan who excelled off the bench in the first two games.

"It's unfortunate for Caelan to be missing this week, hopefully he'll be back soon," said Henshaw.

"To have someone like Jack coming in, it goes to show the talent we have across the board in terms of the competition for places, the strength and depth.

"It's great that we have people of that talent to step in."