Ruthless world number two Aryna Sabalenka warned Sunday she is stronger now than when she won her maiden Grand Slam in Australia as her imposing march towards another title gathered steam. The Belarusian was in total control against unseeded American Amanda Anisimova on Margaret Court Arena, blazing home 6-3, 6-2 in 70 minutes to make the quarter-finals. Sabalenka has dropped a scant 11 games in her four matches and with top seed Iga Swiatek out of the tournament, is the clear favourite to win a second Grand Slam.