 He is also the 4th in the all time Copa Libertadores topscorers list with 31 goals in 47 games.In 1972 Onega moved to Racing Club for a season, but he only managed 9 goals and returned to River the following season.In 1973, he moved to Spain to play for Córdoba CF in the Spanish 2nd division, he stayed with the club until 1978 when he moved to Millonarios in Colombia.