OSBORNE showed it's on course for another successful September campaign after stunning reigning premier Brock-Burrum by 43 points at Osborne on Saturday.
The Tigers were at their hard-running best as they motored clear early and kept check of Brock-Burrum stars Nico Sedgwick and Matt Seiter.
Izaac McDonnell nullified Sedgwick while young gun Michael Driscoll broke even with the competition's most feared big-man.
Bill Alexander kicked three goals in his 50th match, Duncan McMaster was strong in defence and only inaccurate kicking stopped Connor Galvin from kicking a bag.
Brock-Burrum looked flat for the second successive week with Josh Koschitzke, John-Roy Williams, Tyson Neander forced to do the bulk of the heavy lifting.
Howlong caused its second surprise in three weeks by defeating Billabong Crows by 22 points at Oaklands.
Pencil-thin forward Blake Lieschke starred in the Giants' win over Lockhart.