The training session, hosted by NSW coach Laurie Daley and Blues legends Fittler and Trent Barrett, was an invite only affair aimed at developing potential halves to lead the state against Queensland.
EXCEPTIONAL YOUNG TALENT: DALEY
Young Wests Tigers halves Sironen, Jacob Miller, Luke Brooks and Mitchell Moses were all put through their paces at the NSWRL academy this afternoon.
"I think Curtis because Curtis has played first grade," said Fittler.
"I was really impressed with him today. Coming through the ages, things change.
"Curtis' size was really important coming through and that allowed him to adapt to the game quite well.
"The other players aren't as big so they're going to have to take on, when they come through, that extra work load and intensity of the game and they haven't been tested under those circumstances.
"So at the moment I'd have to say Curtis because he's tried and proven."
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And while Fittler was lavish with his praise for the current crop of young stars, the man who was NSW's youngest debutant at just 18 showed he still had it, upstaging many of the young guns in attendance.
"Still got it, still got it," quipped Freddy.
"I'm very sore now though, I think I pulled my hips out of joint. So not good. "