A New Zealand international forward, he played in the NRL for the Brisbane Broncos and Canterbury-Bankstown Bulldogs, and in the Super League for the Leeds Rhinos.

Eastwood was a member of the 2008 World Cup-winning New Zealand Kiwis team and played in all of their matches, including the final victory over Australia.

[3] While his visa was being appealed, several NRL clubs, including the New Zealand Warriors and Canterbury-Bankstown Bulldogs, expressed interest in signing him.

[6] Leeds successfully appealed the decision to deny his visa to play in the UK, and Eastwood joined the Rhinos for the 2010 Super League season.

[17] On 23 September 2018, Eastwood was part of the Canterbury side which won the Intrust Super Premiership NSW defeating Newtown 18-12.

Eastwood missed out on playing in the club's grand final victory over the Wentworthville Magpies at the Western Sydney Stadium.

[21] In February 2020, Eastwood signed a contract to join Ron Massey Cup and NSWRL foundation side Glebe for the 2020 season.