Seymour gave Mooroopna a belting on Saturday to the tune of 103 points.
The Lions were in command from the first bounce, booting five goals in the first quarter to a single minor score.
Not content to rest on their laurels, the Lions continued their run in the second, booting another four to lead by 58 at half-time.
After suffering through 12 unanswered goals, the Cats only managed to get one back mid-way through the third quarter.
Seymour, eager to respond, was quick to boot two more and sink the spirits of its already defeated opponents.
Jack Anderson played a splendid game for the Lions’ guernsey as he looks to a senior recall. He booted eight goals for the game and was named best on ground for Seymour.
Liam Hockley was another standout performer, chipping in with two.
Score: Mooroopna 2.3 (15) lt Seymour 18.10 (118).
Goals: J. Anderson 8; L. Hockley, H. McLean 2; J. Brooks, T. Corboy, B. Gregson, J. Morgan, J. Eager, B. Le Cerf.
Best: J. Anderson, L. Hockley, B. Tarran, H. McLean, T. Clarke, J. Zuccala.
Seymour was dealt a bruising loss by Mooroopna.
The Lions opened their account early with a goal from Dylan Cook, but struggled to score in blustery conditions.
Mooroopna was more accurate, booting seven, to set up a chain of 11 unanswered goals.
Seymour worked hard to try and break the Cats’ defence but was never really in the hunt and trailed by 10 goals at three-quarter time.
The Lions finally managed to find another major, with two goals from Hudson Kaak in the final term.
It was the only quarter where the Lions managed to get a win in the 40-point defeat.
Score: Mooroopna 11.5 (71) d Seymour 3.12 (30).
Goals: H. Kaak 2; D. Cook.
Best: S. Galofaro, C. McCloy, H. Kaak, S. Durham, T. Davey, K. Grant.