 Born in Sotrondio, Asturias, Cundi spent his professional career almost entirely with local powerhouse Sporting de Gijón, save for a one-year loan spell with UD Poblense due to compulsory military service.From the age of 20 onwards he was an undisputed starter for the La Liga club, appearing in nearly 400 competitive games during his 15-year spell.In the 1986–87 season, Cundi played 41 matches (3,549 minutes) for an eventual fourth-place finish.