The first batsman to reach 10,000 runs in both Test and ODI career was an Indian
India’s legendary batsman Sunil Gavaskar was the first man to complete 10,000 career runs in Test cricket. In the March 1987, Gavaskar completed 10,000 runs in his Test career. After him, 11 more batsmen have achieved this feat to date.
Meanwhile, there are a total of 11 batsmen to date who have completed 10,000 runs in ODI career. Another legendary Indian batsman Sachin Tendulkar was the first man to achieve this respectable feat in ODI history, as he had achieved this feat on 31st March 2001.