Montoya spent all his career in the Mexican League playing center field for the Diablos Rojos del México.

[1] Nicknamed "Diablo" since his early days in local Mexicali, Montoya was part of the Mexican squad that competed in the 1961 Amateur World Series played in Costa Rica, where they placed second with a 7–2 record.

[3] In 1962, Montoya registered using his real name and became the Diablos Rojos starting centerfielder, a position he held for the next 15 seasons with the México squad.

[4] In 1964, Montoya played in the Texas League for the El Paso Sun Kings, where he appeared in 90 games, but he had to return to Mexico due to a clavicle fracture.

[11][12] After retiring as player, Montoya kept working with the Diablos Rojos as a coach and was even considered as a successor to legendary manager Cananea Reyes.