Sam Antonacci

Nationality

United States

Born

2003-02-06

Height

5' 11"

Weight

193 lbs

Number

#17

Samuel Joseph Antonacci (born February 6, 2003) is an American professional baseball infielder for the Chicago White Sox of Major League Baseball (MLB). He made his MLB debut in 2026. Amateur career Antonacci attended Sacred Heart-Griffin High School in Springfield, Illinois, where he batted .533 as a senior in 2021 and had a career .477 batting average. After graduating, he played two seasons of college baseball at Heartland Community College. As a sophomore in 2023, he hit .515 with 14 home runs, 103 RBI, and 32 doubles and was named the NJCAA Division II Baseball Player of the Year. After the 2023 season, he played collegiate summer baseball with the Chatham Anglers of the Cape Cod Baseball League, and transferred to Coastal Carolina University. For the 2024 season with Coastal Carolina, he hit .367 with six home runs and 47 RBI.