Seymour was in touch early against Shepparton but fell away in the second half to go down by 31 points.
The Lions were only a goal down at half-time, but with just 18 players, the side wearied and couldn’t maintain the pace in the second half.
Joel Brooks proved to be the livewire up forward for the Lions with three majors, while Julian Morgan and Liam Hockley contributed two each.
Jay Eager toiled hard around the ground for the Lions.
Seymour has now slipped to eighth on the ladder, three games out of the top-six.
Score: Shepparton 10.19 (79) d Seymour 7.6 (48).
Goals: J. Brooks 3; J. Morgan, L. Hockley 2.
Best: L. Hockley, J. Eager, J. Morgan, H. McLean, A. Galofaro, B. Tarran.
It was a tough day at the office for Seymour’s under-18 crew, who were comprehensively beaten by Shepparton.
The Lions booted their one and only goal for the game — courtesy of Huwy Jones — in the first term, while the Bears continued to score at will from start to finish in the 105-point demolition.
Dan Fisher and Jak Crook joined Jones as the Lions’ best.
Score: Shepparton 16.18 (114) d Seymour 1.3 (9).
Goals: H. Jones.
Best: H. Jones, D. Fisher, J. Crook.