Owing to the success of Zenyatta from 2008 to 2010, her sire Street Cry is the world's leading all-weather sire by average earnings index (3.75 AEI), ahead of Bold Executive (3.20), a beneficiary of a strong purse structure and valuable breeding incentives in the province of Ontario in Canada. He is one of nine Ontario-based sires among the top 25 overall.
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