Aurelio Alejandro López Rios (September 21, 1948 – September 22, 1992) was a Mexican professional baseball player. After pitching for several years in the Mexican League, he spent eleven seasons (1974, 1978–87) with four teams in Major League Baseball — a majority of it spent with the Detroit Tigers. He acquired the nickname "Señor Smoke" in Detroit, while he was known as "El Buitre de Tecamachalco" ("The Vulture of Tecamachalco") in Mexico. López was discovered in his hometown by Mexican League scouts and converted from a starting pitcher to a relief pitcher.