After Elle Valentina had bolted in to win the first race, the Post Office Hotel Moree Maiden Handicap (900m), Samphire Hoe won even easier when the filly cruised to victory in the $22,000 Victoria Hotel Moree Maiden Plate (1300m).

Both were ridden by Brooke Stower, originally from Pittsworth (near Toowoomba) and who moved to Tamworth earlier this year.

Sinclair had 12 runners on Friday, November 1 and pre-race had predicted all were decent each way chances.

Elle Valentina started the day perfectly for Sinclair.

The former Victorian jumped well and was leading for Stower who then cut loose in the straight to win on debut and fresh from a let up.

"I was so excited to ride her," Stower said.

"She looks like she might need more ground. Pete just has them going so well. She's got some ability too."

Sinclair said Elle Valentina has "got a little improvement in her".

"Brooke is riding like a demon too," he said.

"She just puts all my horses in a good spot."

Stower can also use some initiative, which she did with Samphire Hoe when trapped three wide around the back but elected to go to the front and then to continue going forward.

By the time she straightened she had put a few lengths on the opposition and increased that for a pretty impressive win.

"Pete's got his horses firing," Stower said after the second win.

"It was a bold move."

Sinclair is excited about the prospects of both.

"She's a nice little filly," he said of Samphire Hoe.

"She freshened up nicely and turned up in good order (from Toby and Trent Edmonds). I just kept her ticking over."

The early double fired Sinclair into outright second on the Hunter and North West Racing Association trainer's premiership, trailing Kris Lees (17) by six, whilst Stower moved into equal third on the jockey's premiership with 10 wins behind Aaron Bullock (24) and Greg Ryan (14) and equal with Andrew Gibbons (10).

Sinclair and Stower kept the winning run flowing when they combined to win the third race of Friday's Moree Race Club meeting with Happens Nomore.

The pair grabbed the trifecta when Happens No More beat stablemate, Mister McRae, in The Pally Pub Colts, Horses and Geldings Class 2 Handicap (1300m).

Snaring a quinella wasn't new for Sinclair. He had done that at Gunnedah last Saturday when Palace Street and Swoop had performed the feat. They are also engaged the sixth race, the Tattersalls Hotel, Narrabri Class 3 Handicap (950m).

For Sinclair Happens Nomore's win was good but he was more delighted by Mister McRae's improvement.

"Good to see Mister McRae runs a good race," he said.

"He's the most promising horse in the stable, but I just can't get him to produce."

However Stower might have provided him with the right gear change.

"She said to put a tongue tie on him," he said.

That might be a key to him.

The win was another thrill, a treble for Stower.

However, she did one better when she rode a fourth winner for Sinclair, with Mymill taking out the $22,000 Royal Hotel Motel Fillies and Mares Class 2 Handicap (1300m).

The quadruple was a first for Stower.

"Never ridden four winners in the one day," she confirmed to Sky Thoroughbred Central's Gary Kliese after the fifth race.

"I'm stoked."

It also shot Stower into outright third on the Hunter and North West Racing Association jockey's premierships with 12 wins. She trails only Aaron Bullock (25) and Greg Ryan (14).

Mymill was her fourth winner after she won the first three races on the Peter Sinclair-trained Elle Valentina, Samphire Hoe and Happens Nomore.

It also came in similar fashion, Brooke leading and then Mymill running away from her opponents for a second successive win after winning at Gunnedah at her previous start.

"She's a lovely little filly, got a ton of ability," Sinclair said.

"Such a progressive little horse. Her and Moree Dreaming are 12 months away."

Sinclair's fourth winner of the day elevated him to 13 wins for the season, four wins adrift of Kris Lees.

Sinclair then finished with a career-best five winners when Master Cramsie led all the way to win the final race on the eight-race Moree TAB card.

Master Cramsie was perfectly rated by Tamworth apprentice Yvette Lewis, her 18th winner of the HNWRA season and her second for the day, to beat Haradify and Yours Truthfully.

Lewis had won aboard Bullseye Score earlier in the day and has now ridden more winners in the HNWRA this season other than Aaron Bullock who also rode a double at Moree.

"He didn't have much luck at Coonamble the other day," Yvette Lewis said.

"Today he rolled along in front and kept going. Got it all his own way, beautiful to ride."

Sinclair's father, Phillip, was also on hand to witness the quintet of race wins.

"He rode four winners for me one day at Goondiwindi," Phillip said of his son.

That was Peter's best day but he thanked his father too.

"He taught me so much," Peter said of the massive day.

Phillip also had a simple reason for his son's success.

"Hard work," he said.

While they celebrated Master Cramsie's third win in six starts at Moree and seven in total from 14 starts.

It was apt Phillip Sinclair was on hand too as he and his son share a unique record. They both trained winners on the same day at Moree as Phillip's father, the late George Sinclair - a marvellous feat from a wonderful racing family.