Four Nations 2014: Sione Mata'utia feels no nerves ahead of Test debut in clash against England Stone Mata'utia trains with the Kangaroos. Picture: Annette Dew Source: News Corp Australia HE IS 18-years-old and training alongside players he once had posters of, so naturally Sione Mata'utia wanted what every kid his age does - a selfie. The problem was the youngest Kangaroos debutant in history was too shy to ask his idols for a photo. Stone Mata'utia isn't feeling nerves. "Yeah I wanted to get one but it was pretty confronting so I wasn't sure if they would like that or not," Mata'utia told The Courier-Mail. I will get some selfies along the way. There's plenty of time to do that and there's plenty of time to mingle and get to know these boys. The first person I saw was Sammy Thaiday and he just gave me a big smile. Kangaroo players train ahead of Sunday's clash. Mata'utia's selfie jitters shows just how raw this prodigy is. He becomes the youngest Kangaroo in rugby league history on Sunday, breaking Israel Folau's record, when Australia tries to keep their Four Nations tournament alive against England in Melbourne. Mata'utia starts on the wing in place of Roosters" player Daniel Tupou, earning his Australian jersey after just seven games. Mata'utia has also skipped past South Sydney rookie Alex Johnston who won a premiership while scoring 21 tries in 18 games this year. Johnston however is one of his biggest fans. "I wasn't surprised he was chosen for the squad, he's a freak," he told The Courier-Mail. "I played with him in under-20"s Origin. He scored a couple of tries and set me up for a couple too. He's a freak of a player. He played great footy and deserves a spot as much as anyone. Mata'utia will be 18 years and 129 days old when he makes his international debut, 65 days younger than Folau was against New Zealand in 2007. "To be with the likes of Brad Fittler and Israel Folau, who I looked up to as a young bloke, I just don't believe it really," Mata'utia said. It'll probably all sink in on the weekend. I'm sure there are plenty of doubters out there, but I guess they're going to have to wait until this weekend. With the likes of Cooper Cronk and Greg Inglis around me, they make my job that much easier. I'm not sure how I'm going to go but I'll do my best. I rang my mum and my sister (to tell them I'm playing) and they couldn't believe it either. They were shocked and they didn't believe me at the start and then a few tears were shed. Originally published as No nerves for Roo rookie Mata'utia