Green Bay Packers Sternberger was drafted by the
Green Bay Packers in the third round (75th overall) of the 2019 NFL Draft. On June 10, 2019, he signed his rookie contract. On September 3, Sternberger was placed on
injured reserve to start the season. He was designated for return from injured reserve and began practicing on October 16. Sternberger was activated off injured reserve on November 2. He scored his first NFL touchdown during the NFC Championship Game against the
San Francisco 49ers on an eight-yard reception from Aaron Rodgers in the 37–20 loss. Sternberger was placed on the reserve/
COVID-19 list on July 30, 2020. He was activated on August 17. Sternberger was suspended two games on June 10, 2021, after violating the NFL's substance-abuse policy. He was waived after returning from suspension on September 21.
Seattle Seahawks Sternberger signed with the
practice squad of the
Seattle Seahawks on September 23, 2021.
Washington Football Team Sternberger signed with the
Washington Football Team on October 6, 2021. He was waived on November 2.
Pittsburgh Steelers On November 23, 2021, Sternberger was signed to the
Pittsburgh Steelers practice squad. He signed a reserve/future contract with the Steelers on January 18, 2022. He was waived on August 30. On November 11, 2022, the
Cleveland Browns hosted Sternberger for a workout.
Birmingham Stallions On January 26, 2023, Sternberger signed with the
Birmingham Stallions of the
United States Football League (USFL). On July 24, he was released from his contract to sign with an NFL team.
Buffalo Bills On July 25, 2023, Sternberger signed with the
Buffalo Bills. He was released on August 27.
Birmingham Stallions (second stint) On November 20, 2023, Sternberger re-signed with the Stallions. He was named to the 2024 All-UFL team on June 5, 2024. He announced his retirement in December 2025, one of several players and coaches who ended their associations with the UFL ahead of a reorganization under incoming owner
Mike Repole. ==Career statistics==