Career
At the 1968 and 1972 Summer Games, he participated in a total of six events. In 1968, he ran in the 1,500 m, 3,000 m steeplechase, and 5,000 m events. Four years later, he again ran in the 3,000 m steeplechase, and competed in the 10,000 m and marathon.
He finished 54th in the latter event.
Quevedo posted his career-best marathon time of 2:27:20 the next year. His top marks in other disciplines had been set between 1968 and 1971.
In the 1,500 m, he had a best time of 3:58.1 in 1968. Quevedo then set personal records in the 5,000 m (14:204) and 10,000 m (30:068) in 1970, and the next year had his fastest time, 9:22.5, in the 3,000 m steeplechase.