Ribalta returned to action in 2021 with the rookie–level Florida Complex League Nationals, posting a 4.24 ERA with 17 strikeouts and 2 saves over 17 innings pitched.[3] He split the 2022 season between the Single–A Fredericksburg Nationals and High–A Wilmington Blue Rocks, recording a cumulative 3.40 ERA with 54 strikeouts and 2 saves across 50+1⁄3 innings of work.[4]
Ribalta split the 2023 campaign between the FCL Nationals, Fredericksburg, Wilmington, the Double–A Harrisburg Senators, and Triple–A Rochester Red Wings. In 27 games split between the five affiliates, he accumulated a 4–1 record and 3.89 ERA with 36 strikeouts and 2 saves across 34+2⁄3 innings pitched.[5] Ribalta began the 2024 season with Harrisburg, logging a 1.00 ERA in 16 games before he was promoted to Rochester. In 25 appearances out of the bullpen for Rochester, he compiled a 4–1 record and 3.62 ERA with 35 strikeouts across 27+1⁄3 innings pitched.[6]
On August 13, 2024, Ribalta was selected to the 40-man roster and promoted to the major leagues for the first time.[7]
Ribalta was optioned to Triple-A Rochester to begin the 2026 season.[8]