Question: When did toronto host the mlb all-star game?
Disambiguated questions and answers: question: What date did toronto host the mlb all-star game?
Which all-star game did toronto host?
answer: July 9, 1991
1991 Major League Baseball All-Star Game
the 62nd playing of the midsummer classic
Natural Questions answer: July 9 , 1991 (from the Wikipedia article "List of Major League Baseball All-Star Game venues")