Aryna Sabalenka came under early pressure as she launched her bid for a third Australian Open title but the Belarusian clicked into gear and overpowered French wildcard Tiantsoa Rakotomanga Rajaonah 6-4 6-1 to reach the second round on Sunday.
The world number one arrived for the match at Rod Laver Arena as the firm favourite but found herself a break down after the opening game and looked troubled throughout the
