Stewart leads US to semis with 79-55 win over Australia

Australia's Marianna Tolo (14) is blocked by United States's Breanna Stewart (10) during a women's basketball quarterfinal game at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Saitama, Japan. (AP Photo/Eric Gay)

Australia's Marianna Tolo (14) drives to the basket against United States's Brittney Griner (15) during a women's basketball quarterfinal game at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Saitama, Japan. (AP Photo/Eric Gay)

United States's Breanna Stewart (10) drives to the basket against Australia during a women's basketball quarterfinal game at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Saitama, Japan. (AP Photo/Eric Gay)

United States's Breanna Stewart (10) celebrates a score with teammates during a women's basketball quarterfinal game against Australia at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Saitama, Japan. (AP Photo/Eric Gay)

United States's Brittney Griner (15) shoots over Australia's Marianna Tolo during a women's basketball quarterfinal round game at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Saitama, Japan. (AP Photo/Charlie Neibergall)

United States's Breanna Stewart laughs with teammates at the end of a women's basketball quarterfinal round game against Australia at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Saitama, Japan. (AP Photo/Charlie Neibergall)

United States's Brittney Griner (15) runs down a loose ball ahead of Australia's Jenna O'Hea, left, during a women's basketball quarterfinal round game at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Saitama, Japan. (AP Photo/Charlie Neibergall)

United States's Brittney Griner (15) flexes her muscle after making a basket during a women's basketball quarterfinal round game against Australia at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Saitama, Japan. (AP Photo/Charlie Neibergall)

Australia's Cayla George (15) is blocked as she drives to the basket against United States's Diana Taurasi (12) and Brittney Griner (15) during a women's basketball quarterfinal game at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Saitama, Japan. (AP Photo/Eric Gay)

United States head coach Dawn Staley reacts during a women's basketball quarterfinal round game against Australia at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Saitama, Japan. (AP Photo/Charlie Neibergall)