Television viewership for the World Series opener dropped substantially.

The 5-3 victory by the Chicago White Sox over the Houston Astros on Saturday night on Fox got a 9.5 fast national rating and 17 share, Nielsen Media Research said Sunday.

That rating declined 31 percent from Boston’s victory over St. Louis in the 2004 opener, which got a 13.7/25. Still, Fox got its highest Saturday night rating in nine months since last season’s NFL playoffs.

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