Records in sport are often treated as monuments to individuals. But they are also documents of their times. Virat Kohli’s milestone in crossing 15,000 runs in One-day Internationals, during India’s first ODI against the West Indies in Thiruvananthapuram is worth examining beyond the customary applause. He is only the second batsman after Sachin Tendulkar to reach the mark. But the more interesting question is what the number tells us about the evolution of ODI cricket. Kohli