Backing up from an impressive victory at Hamilton in November, the Terry and Karina O'Sullivan trained mare did everything right to continue her winning run in the Stawell Bi-Rite Benchmark 70 Handicap at Stawell last Saturday.

Terry O'Sullivan was so impressed by the improvement of Clear Direction, that he plans to run her in a mares race at Caulfield on Boxing Day.

"She was very impressive winning at both Hamilton and Stawell," he said.

"I couldn't be happier with the way she is going. She deserves a chance in Melbourne.

"We'll run her in a fairly good mares race over 1600 metres at Caulfield on Boxing Day and see how what happens from there."

Clear Direction's win brought up a winning double for the O'Sullivan stable at Stawell on Saturday, with Fresnel breaking through for his first career win in the Stawell Windows and Glass Maiden Plate.

Fresnel had been unlucky on numerous occasions, running three second placings in a row and then third at Ararat, before putting in a bold run at Moonee Valley.

He was due for a change of luck and it finally came at Stawell, with the four year old hitting the front at the 400 metre mark and never looked back.

O'Sullivan said he was delighted to see the horse finally break through.

"He has been knocking on the door for a while," he said.

"It has taken him a while to win a race, but he did a good job from the outside. We'll run him at Horsham on Sunday and then he'll probably go for a spell."

The stable also celebrated a winning double at Caulfield last Wednesday, with both Magnapal and Happy As Hell saluting.

O'Sullivan said he couldn't remember exactly the last time the stable had a city double, but he was thrilled.

Magnapal, which looks to be hitting his straps after a series of luckless runs last preparation, overcame a wide draw to win the Silvan Australia Handicap over 1800 metres.

"He did a great job. He was three and four wide most of the way and still went away from them. To win from there was a great effort," O'Sullivan said.

Magnapal will return to Caulfield on Boxing Day to contest another 1800 metre race.

Happy As Hell also brought a smile to O'Sullivan's face when he took out the Winslow Constructors Handicap, also over 1800 metres.

The three year old was coming off an impressive win at Kilmore at his last outing and despite having no luck early, was able to upset his rivals at Caulfield.

O'Sullivan said Happy As Hell still raced a little greenly at Caulfield, but still managed to win.

Happy As Hell will join Magnapal and Clear Direction at Caulfield on Boxing Day.