Seeds dominate as Australian Open reaches business end

Iga Swiatek is still on course to complete a career grand slam at the Australian Open. (James Ross/AAP PHOTOS)

Six-time major champion Iga Swiatek and world No.5 Elena Rybakina have punched their tickets into the Australian Open's last-16, rounding out a dominant first week for the big hitters.

Seventeen of the 20 highest men's and women's seeds are still alive at Melbourne Park heading into the second week.