William Michael Conigliaro
- Bats Right, Throws Right
- Height 6' 0", Weight 190 lb.
- High School Swampscott High School
- Debut April 11, 1969
- Final Game September 30, 1973
- Born August 15, 1947 in Revere, MA USA
Brother of Tony Conigliaro, Billy Conigliaro played five seasons in the major leagues, finishing out his career with the 1973 World Series winners, the Oakland Athletics. He had two knee surgeries during the 1973 season, and was released the following spring.
A first round pick in 1965, Billy found out about being picked because Tony came to Billy's graduation to announce it on the stage. His first minor league team was Waterloo.
Billy is also an amateur astronomer.
From 1969 to 1971 he played outfield with the Red Sox, along with other outfielders such as Carl Yastrzemski, Reggie Smith, and his brother Tony. In 1970, the two Conigliaros hit 54 home runs between the two of them.
Both Tony and Billy were high-profile players at the time. Tony was a slugger who started strong with the Red Sox in 1964 and won the home run championship in 1965. Billy started strong in 1969, and in 1971 was eighth in the league in doubles although he had only 351 at-bats.
After Tony had a heart attack which caused brain damage, he lived sometimes in his parents' home and sometimes in Billy's home, which was next door. Source: New York Times, March 3, 1990.
- Topps, Baseball Card, #545 (1974).
- Bill Nowlin: "Billy Conigliaro", in Chip Greene, ed.: Mustaches and Mayhem, Charlie O's Three-Time Champions: The Oakland Athletics 1972-74, SABR, Phoenix, AZ, 2015, pp. 392-398. ISBN 978-1-943816-07-1