ELLIS Ferreira and Chris Haggard, with their respective partners, won through to the quarter-finals of the mixed doubles draw at the Australian Open tennis championships on Monday. Ferreira and his American partner, Debbie Graham, downed fifth seeds Rick Leach of the US and Larisa Neiland of Latvia 6-4 2-6 6-4 while Haggard and Belgian Els Callens put out Australians Todd Woodbridge and Lisa McShea 2-6 6-3 6-3. Leach and Ferreira are regular doubles partners and are the fourth seeds in the men’s doubles draw where they are also through to the quarter-finals.