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Michael Andretti bettered his father’s unofficial record...

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Michael Andretti bettered his father’s unofficial record for the fastest lap on opening day of Indianapolis 500 practice.

Andretti’s top speed was 210.772 m.p.h., breaking the first-day mark of 210.329 set by his father, Mario Andretti, last year. Michael’s fastest lap on the first day a year ago was 210.133.

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