Justin Gatlin has continued his remarkable rehabilitation from a four-year drug ban with a blistering 9.87sec to win the 100m at the opening leg of the 14-meet Diamond League in Qatar. Allyson Felix produced a stunning upset in the women’s 100m, the American three-time world 200m champion clocking 10.92sec to beat home Jamaican rivals Veronica Campbell-Brown and Shelly-Ann Fraser-Pryce. “It was very good to get one over Campbell-Brown, especially in the 100m,” beamed Felix, who enjoys the remarkable record of never having lost in Doha in eight appearances [...]