Casas' 3rd homer, Kazmir help US beat Dominicans 3-1

United States' Scott Kazmir pitches in the second inning of a baseball game against the Dominican Republic at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Sue Ogrocki)

Dominican Republic's Jeison Guzman (10) walks in the dugout following a game against the United States at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Sue Ogrocki)

United States' Triston Casas (26) and Dominican Republic pitcher Denyi Reyes (41) watch his home run in the first inning of a baseball game at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Sue Ogrocki)

Dominican Republic's Denyi Reyes (41) pitches against the United States in a baseball game at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Sue Ogrocki)

United States' Triston Casas (26) shouts as he rounds first base after hitting a home run in the first inning of a baseball game against the Dominican Republic at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Sue Ogrocki)

United States' Triston Casas (26) hits a home run off Dominican Republic's Denyi Reyes in the first inning of a baseball game at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Sue Ogrocki)

Japan's Munetaka Murakami, left, and Hideto Asamura celebrate after a semi-final baseball game against South Korea at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. Japan won 5-2. (AP Photo/Matt Slocum)

Japan's Takuya Kai scores past South Korea's Euiji Yang on a three run double by Japan's Tetsuto Yamada in the eight inning of a semi-final baseball game against South Korea at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Matt Slocum)

Japan's Ryoji Kuribayashicelebrate after a semi-final baseball game against South Korea at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. Japan won 5-2. (AP Photo/Matt Slocum)

Members of team Japan celebrate after a semi-final baseball game against South Korea at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. Japan won 5-2. (AP Photo/Matt Slocum)

Japan's Munetaka Murakami celebrate after a semi-final baseball game against South Korea at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. Japan won 5-2. (AP Photo/Matt Slocum)

United States' Triston Casas (26) tosses his bat after a walk during a baseball game against the Dominican Republic at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Sue Ogrocki)

United States' Tyler Austin (23) celebrates his home run with teammate Triston Casas (26) in the fifth inning of a baseball game against the Dominican Republic at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Sue Ogrocki)

Japan's Takuya Kai reacts after scoring on a three run double by Tetsuto Yamada in the eight inning of a semi-final baseball game against South Korea at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Matt Slocum)

United States' Scott Kazmir pitches in the second inning of a baseball game against the Dominican Republic at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Sue Ogrocki)

Japan's Tetsuto Yamada tosses his bat after hitting a three run double in the eight inning of a semi-final baseball game against South Korea at the 2020 Summer Olympics, Wednesday, Aug. 4, 2021, in Yokohama, Japan. (AP Photo/Matt Slocum)