1. Willie Isa was born on 1 January 1989 and is a retired Samoa international rugby league footballer who played as a centre or winger for Penrith Panthers and Melbourne Storm in the National Rugby League, and the Castleford Tigers, Widnes Vikings, and Wigan Warriors in the Super League.
On 23 January 2025, Isa announced his retirement from playing with immediate effect due to medical reasons.
Willie Isa was born in Auckland, New Zealand, and moved to Sydney, New South Wales, Australia as a one-year-old.
Willie Isa played his junior rugby league for the St Mary's Saints, before being signed by the Penrith Panthers.
Willie Isa previously played one NRL match for the Penrith Panthers, called up unexpectedly at half-time in a NYC game to replace an injured player.
Willie Isa was signed by Melbourne for the 2009 NRL season and he was compared to the Storm's former star player, Israel Folau.
Willie Isa was selected in the Samoan squad in 2010.
On 16 December 2010, it was announced that Willie Isa had signed for Castleford on a 12-month contract, Castleford coach Terry Matterson referred to this signing as being similar to that of Rangi Chase.
In 2012, Widnes fan, David Quayle created a Facebook page on Willie Isa, stating that if Willie Isa was to score; the Widnes fans would riot.
In 2013, Willie Isa found a new position, that position of second row transformed him into one of the form players of the super league.
On 16 May 2014, Willie Isa was the ninth player in as many weeks to sign a new contract and stay with the Vikings.
On 29 September 2015, it was announced that Willie Isa had signed a two-year contract with an option for a third year with Wigan, starting in 2016.
Willie Isa played in the 2016 Super League Grand Final victory over the Warrington Wolves at Old Trafford.
Willie Isa played in the 2017 Challenge Cup Final defeat by Hull at Wembley.
Willie Isa played 22 games for Wigan in the 2022 Super League season.
Willie Isa did not feature in the clubs 2022 Challenge Cup Final victory over Huddersfield.
On 14 October 2023, Willie Isa played in Wigan's 2023 Super League Grand Final victory over the Catalans Dragons.
On 24 February 2024, Willie Isa played in Wigan's 2024 World Club Challenge final victory over Penrith.
On 23 January 2025, Willie Isa announced his retirement from rugby league mere months after signing an extension.