Jon "Jimmy" Magrin (formerly known as Wallace;[4] born 8 October 1994) is a professional rugby league footballer who plays as a prop for the Dewsbury Rams in the Betfred Championship.

Magrin made his début for the London Broncos in the Super League against the Wigan Warriors in 2014.

On 3 January 2017, Bradford Bulls were placed into liquidation by administrators and the contracts of players and staff were terminated.

Magrin featured in pre-season friendlies against Huddersfield Giants and Keighley Cougars.

[7] He featured in the pre-season friendly against Bradford Bulls and made his competitive début against the Dewsbury Rams.