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ST. LOUIS (KSDK) – You might want to leave a few minutes early if you're headed to Busch Stadium this year.

For the first time, some fans were checked with metal-detecting wands on Opening Day Monday.

Major League Baseball is requiring all stadiums to use metal detectors by next season.

The Cardinals are starting with wands, but will phase in walk-through detectors by the end of the season.

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