Another chapter was added to the colourful history of these two clubs on Saturday when bottom-placed Booleroo-Melrose-Wilmington took on the reigning premiers in what had been billed before the contest as a one-sided Roo benefit.

Though by 5.15pm there was no doubt who won the day – Lions by 44-points in a massive upset that rocked the Roo camp no end.

BMW had seven McCallums in their side – four of them made the best players – so it was fitting that someone in the family kicked the first goal.

It was tall winger Nicholas McCallum who converted a big mark with a top kick from near the edge of the arc. Skipper Damien Smith – at full forward – was rewarded for some clever work with a set shot that had the flags out a few minutes later and Orroroo’s defence looked rattled.

Their forward line was unconvincing too, especially with BMW’s Kendrick McCallum, Dustin Berryman and Braden Battersby giving their direct opponents a fair old touch-up at the contests.

It was 15 minutes into the term before the red and black’s scored and that was after skipper Will Bennett toughed out a centre clearance and unloaded to Justin Duffy who picked out Jonathon ‘Biz’ Byerlee well inside range.

However, from the re-start the tri-colours ruthlessly set up Cameron McCallum for the first of his six for the day and even after Bennett snapped a classic goal in heavy traffic to keep the homeside in touch, it was Cam McCallum and Damien Smith who dominated inside 50 for BMW.

A set shot from the pocket gave the Camster his second and two goals in 90-seconds to Smith – both clever pot shots from in-close – put BMW on a roll.

The goal of the day came as the quarter time siren echoed across the ground. The six-pointer – kicked by Cameron McCallum - came after one of those forgettable defensive errors that allows an opposition forward to intercept the kickout after a behind was scored.

McCallum accepted the mark 20 metres out and zigzagged his way through traffic and just dropped the Sherrin onto his boot from about one metre out.