I would really hope that the GMAT would include more information on how/whether the two events are related if they put this on an actual exam. We don't even know if the Tigers and Federer play the same sport (and note how the question uses a well-known baseball team name with a well-known tennis player's name to further lead one to believe they are playing in different leagues). I get that it says "greatest probability," but I think at least mentioning that Federer plays for the Tigers
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