Osterman strikes out 9, US tops Italy 2-0 in softball opener

United States' Cat Osterman pitches during the softball game between Italy and the United States at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

United States' Cat Osterman celebrates with teammates during the softball game between Italy and the United States at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

United States players celebrate after defeating Italy in their softball game at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima, Japan. (AP Photo/Jae C. Hong)

Japan's Minori Naito celebrates after hitting a two run home run during the softball game between Japan and Australia at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima, Japan. (AP Photo/Jae C. Hong)

United States' Cat Osterman pitches during the softball game between Italy and the United States at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima, Japan. (AP Photo/Jae C. Hong)

United States players celebrate after defeating Italy in their softball game at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima, Japan. (AP Photo/Jae C. Hong)

United States' Janie Reed bats during the softball game between Italy and the United States at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

Italy's Giulia Koutsoyanopulos puts her glove on her head during a break in the softball game between Italy and the United States at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

Canadian players celebrate during the softball game between Mexico and Canada at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

Italian players gather prior to the start of the fifth innings during the softball game between Italy and the United States at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

Japanese players celebrate a run score by Minori Naito during the softball game between Japan and Australia at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima, Japan. (AP Photo/Jae C. Hong)

Japan's Minori Naito, center, celebrates with her teammates after hitting a two run home run during the softball game between Japan and Australia at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima, Japan. (AP Photo/Jae C. Hong)

Mexico's pitcher Dalla Escobedo wipes the sweat from her face during the softball game between Mexico and Canada at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

Italy's Giulia Koutsoyanopulos takes a catch during the softball game between Italy and the United States at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima, Japan. (AP Photo/Jae C. Hong)

Australia's Tarni Stepto, centre, during the softball game between Japan and Australia at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

United States' Cat Osterman reacts with teammate Haylie McCleney, right, during the softball game between Italy and the United States at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

Mexico's Suzannah Brookshire waits on first base during the softball game between Mexico and Canada at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

United States' Aubree Munro, left, makes it safely to the base as Italy's Marta Gasparotto drops the ball during the softball game between Italy and the United States at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima, Japan. (AP Photo/Jae C. Hong)

Canada's Victoria Hayward holds her helmet aloft during the softball game between Mexico and Canada at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

Canada's Jenn Salling, right, is congratulated by teammate Erika Polidori after hitting a home run during the softball game between Mexico and Canada at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)

Canada's Jenn Salling is congratulated by head coach Mark Smith after scoring a home run during the softball game between Mexico and Canada at the 2020 Summer Olympics, Wednesday, July 21, 2021, in Fukushima , Japan. (AP Photo/Jae C. Hong)