[1] He made his professional debut in 2013 with the Dominican Summer League Blue Jays, appearing in 15 games.

[2] Ríos spent 2014 with the Rookie-Advanced Bluefield Blue Jays, and pitched to a 3–2 record, 5.91 ERA, and 38 strikeouts in 531⁄3 innings.

[2] Ríos was promoted to the Low–A Vancouver Canadians for the 2015 season, and in 15 total appearances, posted a 3–6 win–loss record, 4.27 ERA, and 59 strikeouts in 651⁄3 innings pitched.

[2] Ríos played the entire 2017 season for the Double-A New Hampshire Fisher Cats, pitching to a 3–9 record, 4.29 ERA, and 63 strikeouts in 86 total innings.

[6] In 9 games split between New Hampshire and the Triple–A Buffalo Bisons, Ríos accumulated a 6.19 ERA with 10 strikeouts across 16 innings.

On June 27, 2023, Ríos was loaned to the Tigres de Quintana Roo of the Mexican League for the remainder of the 2023 season.