Buln Buln inflicted Longwarry's first loss, prevailing 11-9 (75) to 11-1 (67) in a close contest.
The Crows held a narrow lead for much of the contest before the Lyrebirds came from the clouds to clinch victory in the closing minutes.
After Jake Baker levelled the scores in the first term, the Crows added the next four majors either side of the break to open a handy 21-point buffer.
The Lyrebirds added three goals to two to close the margin to 14-points at the long break.
Four goals to two in the third term saw the margin close to two-points at the final change.
Bailey Stephens, Angus Adamiak, Jedd Serong, Lachlan Willis, Fintan Fox and Troy Lehman were working to maintain ascendency for the Crows.
Keeping the Lyrebirds in the contest were Trent Baker, Daniel Axford, Angus Mitchell, Will Battley, Matthew Gray and Samuel Batson.
Jake Baker and Angus Mitchell scored first in the final term to see the Lyrebirds lead by 11-points and a real chance of an upset.
Jedd Serong and Jason Wells scored to bring the margin back to two-points to set up a frenetic finish.
Matthew Gray sealed the game in the final minutes, converting from a strong mark.
BUNYIP fell just short of securing their first win since returning to the competition, Nyora holding on by a solitary point.
After trailing by 14-points at the first change, the Saints clicked into gear with eight goals to four across the middle periods to hold a narrow lead at the final change.
Aaron Coggins, Jesse Heylen, Caleb Crestani, Paul Delaroche, Dylan Heylen and Lewis Kennedy helped the Saints to the lead.
Maintaining the challenge for the Bulldogs were Ned Ashton, Tahj Murphy, Ben Stewart, Kai Jones, William Grummisch and Sam Hughes.
A late goal at the 27-minute mark closed the margin to two points, with the Saints ultimately able to hang on.
NILMA-DARNUM prevailed by just five points in a see-sawing affair, accounting for Poowong 7-12 (54) to 7-7 (49).
The Bombers kicked away early only for the Magpies to hit back and take the lead at the long break.
Four goals to three in the third term saw the Bombers take the lead again and they would hold on in a battle of attrition, neither side scoring a goal in the final term.
Jake Barnard, Nathan Campbell, Thomas Young, Ben Campbell and Sage Tapner helped the Bombers hold on.
Leading the challenge for the Magpies were Jarvis Brown, Zac Gray, Alex Henshall, Aaron Damon, Mitch Molloy and Conor Cunningham.
TRAFALGAR comfortably accounted for Catani, winning 13-9 (87) to 3-7 (25).
Aside from a torrid third term that saw 1-4 to 1-2, the Bloods comfortably won each of the quarters.
Kyle Beveridge, Dylan Farrell, Blake Slater, Mathew Devon, Jace Butler and Ben Northover led the way in another strong performance.
The Blues were best served by Declan McFarlane, Dean Smith, Brodie White, Brodie Cameron, Jack Hobson and Julian Suarez.