Kathy O'Hara has escaped serious injury in a fall at Rosehill after two-year-old debutante Shadowofyoursmile almost came down in the first race.

The Garry White-trained filly copped a bump from another horse and after O'Hara hit the ground, continued to race through the field.

O'Hara came back with a graze on her face and ice on her shoulder but said she was OK.

The Rosehill Gardens Handicap (1100m) was won by Regimental Pride who went into the race with two starts under his belt.

His jockey Glyn Schofield was confident throughout and sent the horse to the front in the straight but had a momentary fright when he sensed another horse coming.

"I had the race won at the top of the straight and took my time to chase them," Schofield said.

"Then I saw a head appear but I realised the horse didn't have a jockey on its back."

Regimental Pride ($6.50) beat favourite Let's Frolic ($2.50) by a short neck with a half length to Howdah ($5) third.

Shadowofyoursmile came through her ordeal with no apparent problems while the winner will back up in the $200,000 Wyong Magic Millions on Thursday.

"This was like a trial to him," trainer David Payne said.

"He only had to walk over and will walk home. It's not like he had a float trip and that's what takes it out of them.

"As long as he does well over the next couple of days he will go to the Wyong race and then to the Magic Millions at the Gold Coast.

"It was a good win and a good gallop for him."

Tim Martin will assess Let's Frolic as a Magic Millions prospect over the next few days but may take the option of not running her again and waiting to see if she makes the race.

The $2 million Magic Millions Classic (1200m) is at the Gold Coast on January 12.