Mullen is starting 5/8 in the NSW U19 team to take on Qld in the SOO curtain raiser.
Snowden missed out because he has played more firstgrade than lower grade this year, meaning he couldn't be picked.
Ben Farrer, who played SG Ball for the Knights last season, has been picked from Parra. Ironically, he wouldn't have made the Knights Flegg side this season because both Abel and McManus are considered better than him - but is young enough to play Ball this year.
The full side, coached by Knights assistant coach Craig Miller, is:
Michael Lett (Sydney Roosters)
David Milne (Canberra Raiders)
Ben Farrar (Parramatta Eels)
Josh Morris (St George Illawarra Dragons)
Shannon McDonnell (Western Suburbs Magpies)
Jarrod Mullen (Newcastle Knights)
Todd Carney (Canberra Raiders)
Steve McLean (Canberra Raiders)
Luke Douglas (Cronulla Sharks)
Mickey Paea (Sydney Roosters)
Junior Moors (Penrith Panthers)
Daniel Conn (Bulldogs)
Blake Green (Parramatta Eels)
Rhys Lovegrove (Cronulla Sharks)
Dan Hunt (St George Illawarra Dragons)
Nathan Armit (Bulldogs)
James Aubusson (Sydney Roosters)
Snowden missed out because he has played more firstgrade than lower grade this year, meaning he couldn't be picked.
Ben Farrer, who played SG Ball for the Knights last season, has been picked from Parra. Ironically, he wouldn't have made the Knights Flegg side this season because both Abel and McManus are considered better than him - but is young enough to play Ball this year.
The full side, coached by Knights assistant coach Craig Miller, is:
Michael Lett (Sydney Roosters)
David Milne (Canberra Raiders)
Ben Farrar (Parramatta Eels)
Josh Morris (St George Illawarra Dragons)
Shannon McDonnell (Western Suburbs Magpies)
Jarrod Mullen (Newcastle Knights)
Todd Carney (Canberra Raiders)
Steve McLean (Canberra Raiders)
Luke Douglas (Cronulla Sharks)
Mickey Paea (Sydney Roosters)
Junior Moors (Penrith Panthers)
Daniel Conn (Bulldogs)
Blake Green (Parramatta Eels)
Rhys Lovegrove (Cronulla Sharks)
Dan Hunt (St George Illawarra Dragons)
Nathan Armit (Bulldogs)
James Aubusson (Sydney Roosters)