Joey Carbery's move to Munster is paying off dividends for Ireland, according to Rory Best.
The replacement out-half was called upon after just 24 minutes in Ireland's 22-13 Guinness Six Nations win over Scotland after Johnny Sexton was called ashore.
The World Rugby Player of the Year failed a Head Injury Assessment, the result of a number of different incidents.
Sexton required treatment on his leg following the opening try on ten minutes and got a bang on his head before the 17th minute.
"He copped a stamp; I don't even think it was a Scottish foot, I think it was one of our guys who tripped over him," Joe Schmidt later clarified.
"It was a little bit cumulative really. He got a stamp on the ankle and it was really when they were going on to treat that that they decided he wasn't 100% and that they needed to do a HIA and he didn't pass."
Carbery was only five minutes into his 18th cap before he threw an intercept that led to Scotland's only try, Sam Johnson's effort that made the score 12-10.
After that he racked up 16 passes, eight runs for 33 metres and kicked five points.
"He is a cool customer. I think he's benefiting greatly from being down in Munster," said Best of the 23-year-old.
"He's doing really well there and you can just see him growing into the game.
"Some of the things that you see him doing...when that ball was scrappy, he went down and picked it up and made something out of nothing and that's what Joey can do and I thought he bossed the forwards well in a game that was very difficult.
'It was about inches, it was about every time you carried getting an inch, it's all you really were getting. I thought Joey did super. That's ultimately what we need.
"When you lose a world class player like Johnny early on for it not to go badly, Joey to step in there."
The game time he has been allowed at out-half for Munster - the much-heralded reason for the high-profile summer switch from Leinster - has been evident over the last few months.
His ease with ball in hand and willingness to run led directly to Keith Earls' decisive second-half try.
"It's a great learning experience for him as well and it shows how resilient he is," said centre Chris Farrell, a provincial team-mate.
"He's a massively resilient character in Munster as well. I've got to know him really well over the last six months when he's been down in Limerick so it's great for him to have bounced back [from throwing the intercept] the way he did.
"He got control of things and made a nice little break for Earlsy's try and looked really dangerous in attack."
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