[1] He made his first team debut on 2 May 2021, coming on as a second-half substitute in a 2–1 Campeonato Baiano home loss to Jacuipense.
[2] On 19 January 2022, Marco Antônio renewed his contract with the Leão until December 2023, being definitely promoted to the main squad.
[3] A backup option under head coach Dado Cavalcanti, he became a starter under Fabiano Soares, and scored his first senior goal on 1 May, netting the winner in a 1–0 home success over Manaus.
[4] On 31 January 2023, after helping Vitória in their promotion to the Série B, Marco Antônio further extended his contract with the club until 2024.
On 17 January 2024, Marco Antônio renewed his contract with Vitória until 2025,[6] and moved on loan to Portuguesa two days later.