Mario Andretti — NAPA WINERY REOPENS … After Earthquake Wreaks Havoc

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Mario Andretti‘s Napa Valley winery was hit pretty hard by the 6.0 earthquake this weekend — but TMZ Sports has learned the racing legend has already picked up the pieces and reopened his biz! 

FYI — The Andretti Winery is located just 6 miles from the epicenter … and when the shaking started, hundreds of bottles went crashing to the floor. We’re told…