SYDNEY, Australia (AFP) — Olympic champion United States tips off at the women's World Cup with a new-look team missing some of its biggest stars, but even without Brittney Griner and Sue Bird, the basketball powerhouse is the strong favorites for a fourth straight title.

Griner, a standout of their Tokyo Olympic winning team, continues to languish in a Russian prison while Bird and fellow long-time stalwart Diana Taurasi have retired.

Breanna Stewart, Jewell Loyd, Kahleah Copper and Ariel Atkins are among the Tokyo Olympians back in the red, white and blue for the 12-team tournament in Sydney.

With a deep pool of talent, several promising youngsters are knocking on the door, including college player of the year Aliyah Boston and Women's National Basketball Association rookie of the year Rhyne Howard.

"It just shows women's basketball is in good hands," said Indiana Fever's NaLyssa Smith, another of the youthful cohort.

"The future is strong for us. We are going to learn."

Washington Mystics shooting guard Atkins added: "We definitely are younger, but the way we want to play, we want to push the pace and respect the coach and USA Basketball by playing the game the right way."

The United States, on a 22-game win streak in the competition, is pitted alongside Belgium and China in group play, avoiding world No. 3 and hosts Australia.

The Americans, who swept past Japan to win a seventh straight Olympic crown last year, also face Jonquel Jones's Bosnia and Herzegovina, a South Korean side missing marquee star Park Ji-su and minnows Puerto Rico.

Beaten finalist in 2018, Australia is one of only two teams other than the United States or the former Soviet Union to win the World Cup, and it has a much tougher task in Group B.

It was drawn with Asian champion Japan, Tokyo Olympic bronze medalist France, sixth-ranked Canada, Serbia and Mali.

World No. 2 Spain failed to qualify.

The top four teams from each group progress to the quarterfinals before the 10-day tournament culminates on 1 October, with the winner earning a coveted spot at the Paris 2024 Olympics.

The Americans open against Belgium with the plight of Griner, who was arrested at a Moscow airport in February for possessing vape cartridges with a small amount of cannabis oil, casting a shadow over the tournament

The 31-year-old, who was in Russia to play for the professional Yekaterinburg team during her off-season from the Phoenix Mercury, was charged with smuggling narcotics and sentenced to nine years in a penal colony.

Russia does not have a team in Sydney after being axed from the tournament following the invasion of Ukraine.

Australia's "Opals" also begin their campaign on Thursday against European juggernauts France, with Lauren Jackson back on their 12-strong roster after she remarkably came back from years of retirement to be selected aged 41.