He was given a phony tryout by the Boston Red Sox.
In 1945 Jackie was given a tryout by the Boston Red Sox to appease a city councilman. During the tryout he was racially taunted by management and left. Later, the Red Sox decided to pass on Willie Mays because he "couldn't hit a curveball."
Perhaps instead of a "curse," Red Sox fans should've blamed their own lousy management for failing to win a championship over the course of 86 years. Eventually, 14 years after the Robinson incident, the Red Sox became the last team to begrudgingly accept integration by signing Pumpsie Green who abandoned the club midseason, in the middle of a traffic jam, and tried to board a plane to Israel without luggage or a passport.