[3] He made his professional debut with the rookie–level Arizona League Athletics, logging a 1.75 ERA across 15 appearances.

Basso did not play in a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic.

[4] Basso spent the 2021 campaign with the High–A Lansing Lugnuts, registering a 4.71 ERA with 26 strikeouts across 7 appearances (4 starts).

[7] On November 15, 2023, the Athletics added Basso to their 40-man roster to protect him from the Rule 5 draft.

[12] He made his MLB debut later that day against the Atlanta Braves, pitching a scoreless inning in relief and recording his first career strikeout against Marcell Ozuna.