Old Xaverians seized the initiative early and never lost it, putting SBMT to the sword at Toorak Park.
Jake Williams booted nine for the Red 'n' Blacks, and Mitch Parker five in the big win.
Hamish Morris led the way in a midfield that provided the front men with continuous opportunities and nine players split the uprights.
The big win gives the second-placed Xavs team a big percentage advantage over top-placed DLS and should it keep winning, is ready to assume top spot.
However, clashes with some of the better Reserves teams are ahead, beginning with a joust against fourth-placed Old Melburnians at Elsternwick next week.,
Old Xaverians 7.5-47 13.9-87 18.11-119 23.12-150
St Bedes/Mentone Tigers 0.1-1 0.1-1 3.2-20 3.4-22
Goal Kickers: J. Williams 9, M. Parker 5, M. Hess 2, T. Beaton 2, L. Pirrie, N. Nunan, J. Anderson, W. Mantesso, M. Douglas
Best Players: J. Williams, H. Morris, C. Kennedy, M. Parker, T. Beaton, B. Plant