Apprentice jockey Jake Hull won't forget his introduction to city riding at Canterbury on Wednesday when he became the third NSW rider in a week to be involved in a serious racing incident.Hull walked away with a sore right hip and shoulder after his mount Saddler Jack broke down, dislodging the 17-year-old hoop.A week ago leading rider Kerrin McEvoy fractured a vertebra in the middle of his back in a fall at Gosford while Patrick Ferris is in Newcastle's John Hunter Hospital in an induced coma

Apprentice jockey Jake Hull won't forget his introduction to city riding at Canterbury on Wednesday when he became the third NSW rider in a week to be involved in a serious racing incident.

Hull walked away with a sore right hip and shoulder after his mount Saddler Jack broke down, dislodging the 17-year-old hoop.

A week ago leading rider Kerrin McEvoy fractured a vertebra in the middle of his back in a fall at Gosford while Patrick Ferris is in Newcastle's John Hunter Hospital in an induced coma after a fall at Muswellbrook on Monday.

Saddler Jack was travelling near the lead approaching the final bend in theraces.com.au Handicap (1550m) when the gelding sustained an upper foreleg fracture.

Hull fell to the side of the Grant Allard-trained Saddler Jack and was able to walk away from the incident, but Saddler Jack had to be euthanased.

The Brett Cavanough-trained The Invincible One went on to score a neck victory over Landamman with the favourite Mazzini a short neck away third.

"It's not the way I wanted to start my city career," Hull said.

"I heard a loud pop and the horse dipped and I lost my irons and went off to the side.

"My right hip and shoulder are sore but it could have been worse."

The Invincible One was also travelling near the speed and was able to fight off Landamman in the straight.

Cavanough said the booking of premiership-leading rider Nash Rawiller was the significant factor on the day.

"I was going to claim on him but when I could get Nash, I thought he was definitely worth more than the minus three kilos for an apprentice," he said.

"For sure he made a big difference today. I said to him that he just rated him perfectly.

"He's riding in peak form and is chasing the premiership so it was great to have him on."

The victory took Rawiller's season tally in Sydney to 78 as he bids for a first Sydney premiership.

Nearest rival Corey Brown also rode a winner on the day to remain six behind Rawiller.

Earlier, the John O'Shea-trained filly Warpath overcame older horses to lead all the way in the Rosehill Gardens Event Centre Handicap (1900m).

Warpath was a dual acceptor with O'Shea selecting the fillies and mares Benchmark 75 over the three-year-old Benchmark 68 over the same trip later in the day.

Warpath defeated The Warrior Woman by three-quarters of a length and O'Shea and jockey Tim Clark believe the filly will develop into a lovely stayer in time.

"We really like her," O'Shea said.

"I'll probably give her one more run then give her a nice break and come back in the autumn."