A sea of number ones converged on Gosch's Paddock on Wednesday morning for the Club's annual Billy's Buddies clinic.
Billy Slater and the Melbourne Storm playing group held the 2015 clinic with over 200 kids in attendance.
"I look forward to this day every year," Slater said before the clinic on Wednesday morning.
"There are plenty of numbers out there, I think we've got 400 members all up. It's a great little concept.
"It's very humbling actually to see all the kids with your name and number on their back."
Players and NRL development officers ran a series of drills for Billy's Buddies members throughout the morning, providing skills and tips for the young fans.
"This Club and the game of rugby league has done a great job in the state of Victoria," Slater said.
"If we can do our little bit and push our code, get kids out there enjoying themselves and having a bit of fun that's what it's all about."