Cumberland, 24, formerly apprenticed to Tim Martin at Rosehill, only came out of his time last Sunday.

Yesterday he scored his biggest career win when the Stephen Quintano-trained Master Pom led throughout to win the Group Three event.

"That was my first senior ride. I'm still shaking, I can't believe it," he said.

And ironically it was the fallen horse, race favourite Victory Smile (Stathi Katsidis), who nearly brought about Master Pom's downfall.

Katsidis crashed to the turf at the 1800m and the riderless Victory Smile worked his way through the field to race outside Master Pom over the last 1000m.

"I just got my horse to relax and this other thing ranged up on my outside," Cumberland said.

"I started to yell out and bag who was riding it then I looked over and saw the horse didn't a jockey - he didn't even have a bridle.

"Then in the straight he started to hang. I thought they'd catch me for sure, but I just put my head down and went for home.

"I'm over the moon winning this race, particularly at my first ride as a senior jockey."

Katsidis was taken by ambulance to Grafton Base Hospital for precautionary X-rays on a suspected hip injury.

He was the second rider in

as many races to be

hospitalised after Greg

Snowden fell from Remember Tom in the Ten Network Plate.

Snowden was also X-rayed for an injury to his right shoulder.

Stewards have deferred inquiries into the two falls to a date to be fixed.

Master Pom gave bookmakers a skinner on the event which was highlighted by heavy wagering on-course.

And it provided a bonanza for the bagmen over the two-day carnival with 80-1 outsider Citichy winning Wednesday's Ramornie Handicap.

Master Pom officially started at 50-1.

The six-year-old gelding, owned by trucking magnate Bob Ruttley, was only recently transferred to Warwick Farm-based Quintano.

Ruttley had numerous horses with John Size at Randwick before that trainer shifted to Hong Kong and won the trainers' premiership.

Size was straight on the phone to congratulate Ruttley immediately after Master Pom's win.

Master Pom was initially given to Joseph Pride to train before Quintano took over.

"Matt Rogers sent him over from New Zealand when he couldn't go any further," Ruttley said.

"I got him for free and we just made an arrangement to split the prizemoney."

Master Pom is likely to continue on to the spring carnival.

"When he was with Joseph we had him set for this race last year but he had problems," Quintano's stable foreman Trevor Rogers said.

"We'll take it as it comes but the spring carnival in Melbourne - there are some lovely cups races for him down there - is on the agenda."

Master Pom hung on valiantly to defeat the fast-finishing Paestum by a half-head with Asia a short head away third.