West Coast won the top of the table Mid West football A grade showdown against Central Eyre on Saturday.
The Bulldogs had swept all before them in the opening four matches and had the best attack and defence in the league but were blown away by the Hawks in a 20-14 (134) to 8-2 (50) result.
West Coast led by 23 points at quarter time and did not look back as they extended the lead to 37 points by half-time.
The Bulldogs slightly reduced the gap in the third quarter but were blown away in the last as West Coast stormed to top spot.
Nicholas Schumann impressed with five goals, while Mark Dolling grabbed four.
Zac Fitzgerald led the way for the Bulldogs with three goals.
A big first half helped Elliston to a 18-14 (122) to 7-14 (56) success over Wudinna.
Twenty-three points ahead at the first break, the Roosters added seven goals to three in the second quarter to lead by 50 points at half-time.
They were able to cruise to victory from there, again outscoring the Magpies in the second half to win by 66 points.
Ben Hurrell slotted home four goals and Adam Hurrell added three to see Elliston move up to third position on the table.
Wirrulla recorded its first victory of the campaign with a 13-8 (86) to 10-8 (68) success against Western Districts.
It was a hard-fought contest throughout in which the margin was only five points at half-time, before the Tigers took an eight-point lead into three-quarter time.
A five-goal final quarter saw Wirrulla over the line as Simon Webb kicked four goals.
The breakthrough win moved the Bombers up to fifth on the table.
Central Eyre grabbed another B grade victory as it disposed of West Coast in a 12-16 (88) to 6-9 (45) result.
The Bulldogs led throughout the match and were not troubled after a commanding second quarter.
Dwayne Nottle was the star in front of goal with four majors.
Elliston proved too dominant for Wudinna as they finished 14-17 (101) to 5-2 (32) to win by 69 points.
Wudinna was kept scoreless in the opening term to trail by 35 points and could not recover, being outscored in every quarter.
Jason Maguire bagged three goals for the Roosters.
Troy Olsen was the star as Wirrulla continued its good start to the season in cruising to victory over Western Districts.
The Bombers secured an 18-4 (112) to 5-3 (33) victory that was helped by a superb first quarter in which the Tigers grabbed just a single behind to trail by 38 points.
Wirrulla was not threatened after that and Olsen had a day to remember as he finished with nine goals.