Pedro Rodríguez made six Grand National starts from 1959-71, his best finish was 5th place in the 1965 World 600. He also finished 6th at Trenton, and 13th in the 1971 Daytona 500 in the final year of his life.

https://www.racing-reference.info/race-results/1959-14/W
https://www.racing-reference.info/race-results/1965_World_600/W
https://www.racing-reference.info/race-results/1971_Daytona_500/W