Angelo Bartlett "Bart" Giamatti ( JEE-ə-MAH-tee; April 4, 1938 – September 1, 1989) was an American professor of English Renaissance literature, the president of Yale University, and the seventh commissioner of Major League Baseball.
Giamatti served as Commissioner for only five months before dying suddenly of a heart attack. He is the shortest-tenured baseball commissioner in the sport's history and the only holder of the office not to preside over a full Major League Baseball season. Giamatti's most notable act as Commissioner was to negotiate the agreement resolving the Pete Rose betting scandal in which Rose was permitted to voluntarily withdraw from the sport to avoid further punishment.