After resting for more than 10 weeks with a virus the horse took just three starts to get back on the winner's list.

Prior to being rested the three year old had had two starts at Caulfield claiming a first and a second placing.

Dwayne Dunn had the ride on Happy As Hell over 1600 metres and O'Sullivan couldn't have been happier.

"Really pleased with the ride," he said.

"There wasn't a whole lot he could have done better."

Dunn sat Happy As Hell midfield behind the race favourite Synthetic and had some ground to make up going into the final 400 metres.

With 50 metres to go Dunn got out into the clear and Happy As Hell hit the line hard.

"He finished off really well," O'Sullivan said.

"He could definitely improve on the run but it was a good run in good conditions."

Finishing behind Happy As Hell was Razzle Dazzle Rock and LeMans.

The three year has become quite fond of the Caulfield track and it surrounds having had his best result so far there.

The win for Happy As Hell brings his total earnings to just over $111,000.

Happy As Hell will return to Caulfield on Saturday where he will run over 2000 metres.

Fellow Stawell trainer Paul Jones also had a win over the Easter weekend with his three year old gelding Villopoto at Donald.

Villopoto has created a perfect record winning one race from one start.

With jockey Dean Holland first starter Villopoto got to the front early and remained there for the entire race.

Villopoto finished the race seven lengths clear of second placed Ebony Rose and Your Devine Archie which was third.

"We are really happy with how he ran," Jones said.

"He has had a couple of jump outs now and performed well at each of them.

"We were fairly confident going in."