Mychel Sanchez was not seriously injured in a Monday spill at Parx Racing and could resume riding as soon as this weekend, according to his agent, retired rider Josiah Hampshire Jr.

Sanchez was thrown hard to the turf when his mount, Shake Things Up, appeared to break down entering the first turn of the 1 1/16-mile race. With Sanchez momentarily knocked out and lying in the center of the course, the outriders directed the riders of the remaining eight entrants to pull up their mounts in the stretch. The stewards declared the race a no-contest.

Main Sequence, the retired champion male turf horse of 2014, is back at the Fair Hill Training Center, where he spent his racing days with trainer Graham Motion.

According to a newsletter put out by Herringswell Stables, Main Sequence has been moved into the stall and paddock previously occupied by Better Talk Now, who was euthanized in June at age 18 due to complications following colic surgery.

Main Sequence will share his paddock with the 29-year-old Gala Spinaway, who in August 1993 won the Grade 3 Polynesian at Pimlico, giving Motion his first graded win.

Graded stakes winner El Areeb, who has missed the bulk of his 3-year-old season with a knee injury, has returned to the Laurel Park work tab for trainer Cal Lynch and is being prepared for a winter campaign.

El Areeb breezed three furlongs in 37.80 seconds Sept. 23 and then picked up the tempo last Saturday with a bullet three furlongs in 36.00.

“We gave him an easy three furlongs two weeks ago and then last week let him work a little,” Lynch said. “He probably went a little faster than we’d like, but he did it well.”

Early this year, Whitmore was the talk of the sprint division, opening his campaign with four consecutive victories, including a pair of Grade 3 wins, that vaulted him into the upper echelon of the division.

But things have not gone quite as well during the second half of the year. Whitmore has started just twice since defeating A. P. Indian in the Grade 3 Maryland Sprint on May 20, finishing third in both the Grade 2 True North at Belmont and the Grade 3 De Francis Memorial Dash last month at Laurel.

There were 525 Thoroughbred foals born in Oklahoma in 2015, representing just 2.5 percent of the registered foal crop in the United States. But a good horse can come from anywhere, as Oklahoma-bred millionaires Lady’s Secret, Kip Deville, and Clever Trevor have already proved.

And among those 525 Thoroughbreds born in the Sooner State two years ago was Lady Ivanka, who will go for the second Grade 1 win of her nascent career in Sunday’s Frizette Stakes at Belmont Park.

All eyes will be on Unique Bella when the top prospect for the $1 million Breeders’ Cup Filly and Mare Sprint makes her eagerly awaited return to action Sunday in the Grade 3 L.A. Woman at Santa Anita.

ARCADIA, Calif. – Arrogate had an easy morning Tuesday at Santa Anita, with a half-mile work in 50 seconds under jockey Rafael Bejarano as he continues his preparation for the Breeders’ Cup Classic on Nov. 4 at Del Mar. He galloped out five furlongs in 1:03, and six furlongs in 1:16, according to Santa Anita’s clockers.

Canterbury-based Amy's Challenge, who has run the fastest Beyer Speed Figures of the year for a 2-year-old filly, has been ruled out of Keeneland's Grade 1 juvenile stakes this weekend after an episode of tying up, a condition causing severe muscle cramping, trainer Mac Robertson said Tuesday morning.

The seventh race at Parx on Monday was declared a no contest after a one-horse spill left jockey Mychel Sanchez lying unconscious in the center of the turf course on the first turn of the 1 1/16-mile race. The outriders waved the remaining eight runners in the field to a halt in the stretch.

Sanchez was aboard Shake Things Up for trainer Jorge Navarro in the $16,000 claiming race. Shake Things Up was racing in third position entering the first turn when he appeared to break down, although it is possible he may have clipped the heels of Vinceremos.

Voodoo Song, who won two races in five days as part of his four-win Saratoga meet, could wheel back in a week in Saturday’s Grade 3, $500,000 Hill Prince Stakes at Belmont Park, trainer Linda Rice said Monday.

Voodoo Song finished second, beaten three-quarters of a length by Just Howard, in the Grade 3, $200,000 Commonwealth Derby last Saturday at Laurel.

“It is a possibility only because how often do you get to run for $500,000 in your backyard?” Rice said. “And, he’s a 3-year-old and there are only a few straight 3-year-old grass races left this year.”