World no.1 Jannik Sinner defies doping case to dominate men`s tennis
Jannik Sinner`s reserved public persona belies a mature and steely 23-year-old who has shown supreme mental strength to put aside a doping scandal and win another Australian Open. Sinner`s status as Italy`s biggest sports star and the new dominant force in men`s tennis has only gathered pace over the past fortnight in Melbourne.