Complex sentence: Curtis Hooper Fullerton (September 13,1898-January 9,1975) was a pitcher in Major League Baseball who played his entire career for the Boston Red Sox (1921-1925,1933).
Split into simpler sentences: Curtis Hooper Fullerton (September 13,1898-January 9,1975) was an American professional baseball pitcher with the Boston Red Sox of Major League Baseball. Fullerton played his entire career for the Red Sox (1921-1925,1933).