France considers hijab ban in sports drawing criticism from athletes / WADA explains reasons for different doping bans for Sinner and Spanish figure skater / Celebrity boxing matches and 'doping-legal Olympics': The increasingly blurred line between sports and entertainment / Players cry foul over double standards as Sinner dodges doping ban / Players allege double standards after Sinner escapes tennis doping ban / On Chinese doping case, lawmakers demand action, answers from Olympic and law-enforcement leaders / Pogba has tough fight against 4-year ban judging by doping cases in soccer and for other stars