Australian basketball captain Tess Madgen has joined the WNBL's Sydney Flames on a two-year contract.

The 32-year-old guard guided the Opals to the bronze medal at last year's World Cup in Sydney, but missed most of the subsequent WNBL season with a persistent knee injury.

Madgen's move to the Flames ends a second stint with the Melbourne Boomers, with whom she won the 2021/22 WNBL championship and earned All-WNBL First Team honours in 2015.

A WNBA player with the Phoenix Mercury in 2015, Madgen will use her time with the Flames to limber up ahead of the 2024 Paris Olympic Games, which are likely to be her last Olympics with the Opals.

The signing is a major coup for the Flames, who are hoping to put a sixth-placed finish and the acrimonious exit of coach Shane Heal behind them in the 2023/24 season.

"I'm super excited to sign on with the Flames for the next two seasons and be a part of that elite organisation," Madgen said.

She will arrive in Sydney in September to begin her contract, the second year of which is a mutual option.

Madgen joins Kiera Rowe, Tiana Mangakahia and Emma Clarke as one of four players signed so far by the Flames.