Premiership-winning South Sydney centre Dylan is still pinching himself after his first full year in first grade culminated in a premiership win and a call up to Australia's Four Nations Test squad.
Speaking to media after Australian coach Tim Sheens included Walker in his 24-man squad, Walker said he was excited and stoked to be a part of the tournament.
He said his proud mum shed a tear when he told her the news straight after he himself was informed by Rabbitohs coach Michael Maguire.
He added the chance to play alongside and learn from childhood hero and current Kangaroos skipper Cameron Smith was a dream come true.
Watch the full video above.