Rogelio B. Martínez Ulloa was a pitcher in Major League Baseball who played briefly for the Washington Senators during the 1950 season. Martínez was nicknamed Limonar, after the modest little town in his native Matanzas where he started to play baseball. In one major league season, Martínez posted a 0–1 record with a 27.00 ERA in two appearances, including one start, giving up four runs on four hits and two walks while striking out none in 1.1 innings of work. Three days before Washington called Rogelio up, he had hurt his knee, and he didn’t tell the club.
From Martinez's SABR biography: This slender sidearm righty appeared in just two big-league games, in 1950. Nonetheless his career is more significant than it appears. “Limonar” – so called for the country town where he learned to play ball – was one of the icons of Cuban amateur baseball in its most glorious, romantic, and competitive era, the early 1940s.
Author Roberto González Echevarría highlighted four pitchers – “revered amateurs and later professionals” – who made it to the majors. The most prominent was Conrado Marrero, who died in 2014, almost four years after Martínez – they were among the last living links to that time. Julio “Jiquí” Moreno, a dazzling flamethrower in his youth, was a distinguished runner-up. Sandalio “Potrerillo” Consuegra had the most success in the US, where he was known as Sandy. These three men and Martínez all started in the big leagues with the 1950 Washington Senators.
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