Over 99 runnings, the Indianapolis 500 has become the most famous event in motorsport. That iconic status is built on a bedrock of hundreds of small stories, and to celebrate the centennial race, RACER.com has asked some of the people who are part of Indy's fabric to share a few of those stories with us. Check back every day between now and race day for a new 'Indy Diary' entry. Mario Andretti's third-place finish in 1965's Indianapolis 500 earned him that year's rookie-of-the-year honors. Four years later, he won the race. The key? Talent - and an eye for an opportunity. "I look back and I can spot key points in my career which made a difference. It's just amazing. The opportunity...
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