[Ans] The father of actor Paul Giamatti is the former commissioner of which sport?

Paul Edward Valentine Giamatti is an American character actor and producer.  His father is  A. Bartlett Giamatti (Angelo Bartlett Giamatti).

His father is Angelo Bartlett "Bart" Giamatti was an American professor of English Renaissance literature. Later he became the president of Yale University. Not only that he became the seventh Commissioner of Major League Baseball.

From the above description you got the answer right?

 Some other interesting facts about him.

Giamatti served as Commissioner for only five months before dying suddenly of a heart attack.

He is the only holder of the office not to preside over a full Major League Baseball season.

Giamatti attended South Hadley High School, spent his junior year at the American Overseas School of Rome.

 In the film Sideways, a photograph of the character Miles Raymond (portrayed by Giamatti's son, Paul) with his late father is really a picture of Paul and Bart Giamatti.