NHL

Devils demote four

The Devils yesterday trimmed their roster to 29 by assigning goaltender Jeff Frazee and forwards Olivier Magnan-Grenier, Ben Walter and Vladimir Zharkov to AHL Lowell.

The Devils still need to trim six before Oct. 1, though Patrik Elias (groin surgery) may provide an exemption.

Competition on defense for two or three spots probably is among Rob Davison, Mark Fraser, Andy Greene, Jay Leach and Cory Murphy, with Greene most likely set.

Rod Pelley and Tim Sestito are competing for a center spot, at least until Elias returns.

Niclas Bergfors, Matt Halischuk and Ilkka Pikkarainen are looking for right-wing spots, while Andrew Peters and Pierre-Luc Letourneau-Leblond are in left-wing competition.

mark.everson@nypost.com