The Lions jumped Mornington with seven goals to two in the first quarter and never surrendered the lead right throughout the match.
With a good spread of goalkickers, a hardworking midfield and a miserly defence, the Lions controlled the game from the opening bounce.
Coach Gubby was pleased with the result, "The most impressive part of the result was that the instructions the team were given were adhered to strictly by the playing group", Gubby commented.
Although injuries to ruckman Scott Ryan and midfielder Zhan Useinov were disappointing, both players appear likely to return for the next match against Frankston away.
In other results, the Masters also avenged their disappointing loss to Mornington in last year's top of the table clash.
The Lions Masters established a comfortable lead early and managed to hold off Mornington to record a 17 point victory.
In the early game the fledgling Supers team in Division 3 struggled to play fluent football and after a tardy start went down to Box Hill by 61 points.