Previously undefeated Crystal Brook suffered its first loss when it went down by 33 points to bottom side BMW in the upset of the season.

The Lions led all day in a powerful display of team football which defied its position on the ladder.

Lions were ahead 5-2 to 1-3 at quarter time, 7-3 to 4-7 at half time and 10-9 to 6-9 at three quarter time before running out comfortable winners.

Best for the Lions was once again Kendrick McCallum in the centre.

Damien Smith provided plenty of dash around the ground, Sam Keller, Geordie McCallum in the ruck and Michael Bury.

Jordan Arthur kicked five goals, Andrew Milne four and Cameron McCallum two.

Best for the Brook was midfielder Shane Arbon (two goals), Cameron Arbon, Matt Coates at centre half back, Jack Cousins on the ball and Chris Stringer. Keagan Brinkley kicked two goals.

Jamestown-Peterborough 13-8 (86) d Orroroo 11-10 (76)

Fifth placed Jamestown-Peterborough scored a hard-fought 10-point win over fourth side Orroroo in the match played at Roo Park on the weekend.

The Pies stormed out of the blocks with an impressive 6-0 to 0-2 first term.

Orroroo were without a number of star players and fought back hard during the final three terms but were not able to reduce the margin below 10 points.

Best for the Magpies was winger Nick McInerney in his best game of the season, Chris Stacey on a half back flank, and Greg Farr on the ball.

Zac Noonan kicked three goals, Bernie Kelly, Shane Heness, Greg Farr and Darren Woolford each kicked two goals.

Best for Orroroo was rover Brodie O’Dea, midfielder Tim Byerlee and hard working Liam O’Dea, Josh Clark in defence and Dylan Warren (two goals) on a wing. Kirwin Moore kicked five goals from full forward and Tim Byerlee kicked two.

Southern Flinders 17-18 (120) d Broughton-Mundoora 9-3 (57)

Southern Flinders look to have secured the double chance with an impressive 63-point win over third placed Broughton-Mundoora.