After tasting their first defeat of the season last weekend after a trip Leeton, West Wyalong was able to rebound and condemn Waratahs to their first loss of the season after the two sides met at Ron Crowe Oval on Sunday afternoon.
After both sides battled for dominance in the opening 10 minutes, it was West Wyalong's Tim Dore who was able to make the vital breakthrough in the 13th minute.
Dore scored a second three minutes later before Lou Goodwin extended the home side's lead to 18-0 with 25 minutes gone.
The Waratahs were able to reduce the margin before halftime with Viliami Ngu getting across the line to see the defending champions trailing 18-6.
Ben Vearing gave the Waratahs a chance as he scored the first two tries of the second half to see his side close to within two points however that seemed to jolt the Mallee Men back into life.
Goodwin scored his second try of the match to get the momentum back in West Wyalong's favour before Mitchell Goodwin wrapped up the two points for the Mallee Men with a try with two minutes left on the clock.
The Waratahs will look to bounce back when they return to Exies to take on Leeton while West Wyalong makes the trip to Coleambally to take on the Roosters.