Diomedes Antonio Olivo Maldonado
- Bats Left, Throws Left
- Height 6' 1", Weight 195 lb.
- Debut September 5, 1960
- Final Game June 12, 1963
- Born January 22, 1919 in Guayubin, D.R.
- Died February 15, 1977 in Santo Domingo, D.R.
Remembered in the USA only as a curiosity, a 41-year-old rookie, Diomedes Olivo was a legend in the Dominican Republic, where he played from 1951 to 1961, winning the most valuable pitcher award six times in that period. One website chooses him as a pitcher on the all-time-best foreigner team (of players who played virtually their entire career outside of the major leagues). He had previously helped the Dominican national team to a Silver Medal in the 1946 Central American and Caribbean Games, their first appearance in baseball in the Central American and Caribbean Games. He was 2-0 with a 0.99 ERA in the event.
He wasn't just a curiosity for major league batters. In 1960, he appeared in 4 games with an ERA of 2.79. In 1962, he appeared in 62 games (only Roy Face had more appearances on the team with 63). Olivo had an ERA of 2.77, a record of 5-1, and 7 saves. He recorded 66 strikeouts in 84 1/3 innings. He was by far the oldest player on the Pirates - the second oldest was Harvey Haddix, who was 36.
He was undersecretary in charge of sports for the Dominican Republic when he suffered a fatal heart attack in 1977. He died only two weeks after his brother Chi-Chi Olivo. He was elected to the Latino Baseball Hall of Fame as part of its 2012 class.
- Rory Costello: "Diomedes Olivo", in Clifton Blue Parker and Bill Nowlin, ed.: Sweet '60: The 1960 Pittsburgh Pirates, SABR, Phoenix, AZ, 2013, pp. 167-172. ISBN 978-1-93359-948-9