Black Caviar has written yet another chapter in her record-breaking career with victory in the $1 million TJ Smith Stakes at Royal Randwick.

A sell-out crowd of almost 24,000 waited until the last race to witness her 25th victory and only her second in Sydney, her first since the 2011 TJ Smith.

She strolled away to a three-length victory ahead of Epaulette and Bel Sprinter to put the naysayers who emerged during the week in their place.

"She's a special horse and words escape me," tearful jockey Luke Nolen said returning to scale.

"I'm not a wordsmith or a very well-educated man by any stretch but she totally touches me.

"When the pressure kept getting bigger... you can see what she means to racing and to be a part of it just blows you away."

Unbeatable mare Foaled: August 18, 2006 Trainer: Peter Moody Record: 25-0-0 Earnings: $7,948,936 Awards: WTRR World Champion Sprinter (2010, 11, 12) Australian Racehorse of the Year (2011, 12) European Champion Sprinter (2012) Australian Champion sprinter (2011, 2012) Last three runs: 1st - TJ Smith Stakes, Randwick, NSW (1,200m) 1st - Lighting Stakes, Flemington, Victoria (1,000m) 1st - William Reid Stakes, Moonee Valley, Victoria (1,200m)

In collecting the 25th win of her unparalleled career, Black Caviar took her Group One tally to 15 and surpassed the record held by the great Kingston Town.

She also claimed an eighth consecutive win at elite level, breaking the mark set in the 1940s by fellow Hall of Fame galloper Bernborough.

Trainer Peter Moody bristled at suggestions during the week that his mare had been getting an easy time of it in Melbourne but that she would be put to the test in Sydney.

But despite all the straw-clutching from her rivals, she has now lowered the colours of 39 individual Group One winners.

"That's the best field she's ever beat they tell me," Moody quipped after the race.

"That's a little bit of the interstate rivalry I suppose, but I think it was more press than any nastiness there.

"I think everyone appreciates her for what she is. She's a mighty horse. Horses look fast till they line up against her."

The Black Caviar show somewhat overshadowed the running of Saturday's feature event, $1.5 million Australian Derby (2,400m) won by It's A Dundeel.

"Im just really pleased that she put on one hell of a show for the really big crowd that came out here in Sydney who haven't had the pleasure of her as much as Victoria," Moody said.

As predicted, the Joe Pride-trained Rain Affair would inject plenty of speed into the race, but he was no match for the winner and fought on well for fourth.

"When she went past he just knew he was beaten and half gave up and that’s unusual for him," said jockey Corey Brown.

"I was surprised how quick and how early she came at me because I went along at a great clip. It just shows how good she is."

The injury-plagued Hay List weakened badly in the straight and jockey Glyn Schofield reported he was making a respiratory noise and showed a poor post-race recovery rate.

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Moody said Black Caviar continued to be in the best conditions of her career and racing on next season remained a possibility.

"Wouldn't that be a dream, but we'll take her home and see how she pulls up and have a chat with the team next week before any decisions are made on wherever she might go."

If she presses ahead this campaign, races in Adelaide and Brisbane, and even another trip to England, have not been ruled out.

Officials in Queensland will be hoping to lure Black Caviar back for another shot at the BTC Cup, a race she won in 2011.

Brisbane Racing Club officials have transferred the meeting from Doomben to Eagle Farm, putting in place logistical changes needed for a larger crowd if Black Caviar does head north.

Black Caviar's victory ended the day on a positive note for Moody, who had earlier lost promising two-year-old So Man Up who broke a leg in the Sires Produce.

Meanwhile, the half-brother of Black Caviar bought for $5 million this week at the Easter yearling sales will be prepared by John Hawkes and his sons Wayne and Michael.

The colt, given the stable name Jimmy, will join his three-year-old half-brother All Too Hard in the Hawkes stable.