<P> The first tie in an All - Star Game occurred on July 31, 1961 at Fenway Park in Boston when the game was called at 1--1 after nine innings due to rain; the only other rain - shortened game was in 1952, but the National League defeated the American League, 3--2 in five innings . </P> <P> The 2002 All - Star Game, held in Milwaukee, ended in controversy in the 11th inning when both teams ran out of substitute players available to pitch in relief . At that point, Commissioner Bud Selig (a Milwaukee native and former owner of the Brewers) declared that the game would end after 11 innings, and it ended in a 7--all tie . The crowd booed and threw beer bottles onto the field, and the media were highly critical of this unsatisfactory conclusion . </P> <P> To provide additional incentive for victory, Major League Baseball reached an agreement with the players union to award home - field advantage for the World Series to the champion of the league that won the All - Star Game, for 2003 and 2004 . The agreement was extended for both 2005 and 2006, and it remained in place until 2016 . Since 2017, home - field advantage has been awarded to the World Series team having the better regular season record . </P> <P> Previously, home - field advantage in the World Series alternated between the two leagues each year . The American League took advantage of the new rule in each of its first seven years: between 2003 and 2009, the American League won four Series and the National League won three . The National League champion benefited from this rule for the first time in 2010 . </P>

When did all star game determine home field advantage
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