Clemens, (William) Roger

(born Aug. 4, 1962, Dayton, Ohio, U.S.) U.S. baseball pitcher. Clemens played for the Boston Red Sox (1984–96), Toronto Blue Jays (1997–98), New York Yankees (1999–2003; 2007– ), and Houston Astros (2004–06). In 1986 he became the first pitcher to strike out 20 batters in a single (nine-inning) game; he later tied his own record (1996). He won the Cy Young Award for best pitcher an unprecedented seven times (1986, 1987, 1991, 1997, 1998, 2001, 2004).

Source: Encyclopedia Britannica