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Flyers 2013 No. 1 draft pick Sam Morin, a top defense prospect, does a vertical jump test Friday at Skate Zone. (Zack Hill/Flyers)

VOORHEES – Flyers management has been saying it absolutely will not put 2013 No. 1 draft pick Samuel Morin or any of its elite defense prospects that everyone is raving about on its NHL roster until they are NHL ready.

General manager Ron Hextall has been saying this with conviction since being promoted from assistant GM last May, as has head coach Craig Berube, who is entering his first full season.

They said it again last month after Kimmo Timonen, the Flyers’ best defenseman, was lost indefinitely due to blood clots in his lungs and leg.

And now, with Flyers rookie camp starting Saturday at Skate Zone, nothing has changed regarding 2012 third-round pick Shayne Gostisbehere, 2013 second-round pick Robert Hagg, 2014 top pick Travis Sanheim and Morin.

However …

While the expectation is for all four of the Flyers’ top blueline prospects to play in junior or the AHL, Berebe isn’t ruling out being so blown away during training camp and preseason games that one of them pushes for a roster spot.

If would never ever say that somebody can’t make it,” Berube told NJ.com. “That’s just wrong. Do they need time? Probably. But we’re going to look at everybody.”

Travis Sanheim, 18, seems a sure bet to play another year of junior hockey in the WHL, but what if Morin, Gostisbehere or Hagg have a great camp and the Flyers lose another defenseman or two during preseason?

“Then we’ve got decisions to make,” Berube said. “I think you’ve got to be open to that. You’ve got to be open minded.”

As of now, however, Morin likely will return to the QMJHL for one more season of junior hockey, while Gostisbehere and Hagg likely will begin the season playing in the American Hockey League for the Lehigh Valley Phantoms.

“Everybody is kind of fighting for a job,” Berube said. ‘There are junior guys here, but they’re all here to be competitive and they’re trying to show us something. You never know. They’re good players. I think you just have to watch out for those guys.”

Here's the rookie camp roster:

FORWARDS (13)

54-Brandon Alderson; 73-Nicolas Aube-Kubel; 52-Nick Cousins; 75-Radel Fazleev; 77-Austin Fyten; 63-Kevin Goumas; 68-Matt Hatch; 80-Nikita Jevpalovs; 49-Scott Laughton; 58-Taylor Leier; 79-Louick Marcotte; 57-Derek Mathers; 51-Petr Straka.

DEFENSEMEN (10)

39-Mark Alt; 48-Steven Delisle; 82-Brett Flemming; 53-Shayne Gostisbehere; 54-Robert Hagg; 60-Maxim Lamarche; 50-Samuel Morin; 59-Jesper Pettersson; 74-Beau Rusk; 71-Travis Sanheim.

GOALIES (3)

67-Connor Knapp; 70-Martin Ouellette; 65-Anthony Stolarz.

Note: F-Tyrell Goulbourne will miss rookie camp due to an upper-body injury sustained during his Western Hockey League training camp.

Randy Miller may be reached at ramiller@nj.com. Follow him on Twitter @RandyJMiller. Find NJ.com Philadelphia Sports on Facebook.