One of Australia's biggest crisis support and suicide prevention organisations says it would readily intensify its links with the NRL as the game mourns the loss of another young player.

Nineteen-year-old Francis Winterstein, the brother of North Queensland Cowboys winger Antonio Winterstein, died earlier in the week. Francis had been on a contract with the Brisbane Broncos but was playing with Townsville club Stingers.

In mourning: Cowboys winger Antonio Winterstein is grieving the death of his younger brother Francis. Credit:Getty Images

Just over a month ago, Cowboys under-20 player Regan Grieve was farewelled by his shattered family while Hayden Butler, 20 and formerly of the Melbourne Storm system, was found dead in Mackay on the same weekend as Grieve's death.

The loss of the trio in the space of a few months has again highlighted the code's work in the sphere of the mental health of its participants, which has become an increasingly key issue for professional sports.