Yousuf now has 1,788 runs in 2006 .
Pakistani batsmen Mohammad Yousuf breaks a 30 - year - old Test cricket record of most runs in a calendar year , eclipsing Sir Viv Richards ' 1,710 runs made in 1976 .
Mohammad Yousuf now has 1,788 runs in 2006 .
Pakistani batsmen Mohammad Yousuf breaks a 30 - year - old Test cricket record of most runs in a calendar year , eclipsing Sir Viv Richards ' 1,710 runs made in 1976 .