Green Gratto, the 10-year-old Grade 1 winner whose comeback late last year was scuttled by social-media critics, has been entered in an optional-claiming race at Monmouth Park in New Jersey on Sunday.

Jeanne Mirabito, the founder and president of Our Mims Retirement Haven for retired broodmares, died Aug. 5 after a battle with cancer. The native of Hilton, N.Y., and current resident of Paris, Ky., had turned 60 last week.

Parx Racetrack near Philadelphia, Pa., has canceled all of its open stakes races for the remainder of the year, including its two marquee races, the $1 million Pennsylvania Derby and $1 million Cotillion Stakes, both scheduled for Sept. 26, the Thoroughbred Daily News reported.

The two $1 million races were part of a slate of five stakes races scheduled for Sept. 26, on a date in which the Pennsylvania Derby and the Cotillion could traditionally expect to draw top-class 3-year-old colts and fillies pointing to the Breeders’ Cup in late October and early November.

An unraced 2-year-old filly trained by Christophe Clement suffered fatal injuries Thursday night when she was deliberately released from her stall at Belmont Park by a former backstretch employee, ran loose on the road outside the barn, and fell, according to the Nassau County (N.Y.) police and the New York State Gaming Commission.

Pasta, a French-bred 2-year-old filly by Frankel, suffered injuries in the fall that necessitated euthanasia, according to a post on the gaming commission website.

Jockey Rosario Montanez has undergone surgery after sustaining several fractures in his back when he was thrown from his mount during a race Friday at Laurel Park in Maryland.

Montanez was unseated when his mount in the first race, Hendaya, clipped heels leaving the backstretch, according to a chart of the race, which was run on turf. Montanez underwent surgery on Saturday at the R Adams Cowley Shock Trauma Center in Baltimore to treat the fractures, according to Laurel.

Jockey Stewart Elliott is nearing a rare milestone of 5,000 victories, but it is just one of those wins that defines his career – the Kentucky Derby.

Elliott captured the classic in 2004 with Smarty Jones. It’s been the most significant of the 4,983 races he’s won from 32,101 mounts through Sunday, and he said it’s also paved the way for more special moments in racing.

“The whole ride with Smarty Jones, it really kind of brought everything to the top,” said Elliott, 55.

Connie Tassistro, a longtime trainer based in Louisiana, died Friday in New Orleans, according to trainer Dallas Stewart.

Tassistro was a mentor to Stewart, who said the horseman had retired from training about 10 to 12 years ago. Tassistro’s top stakes winners in the latter part of his career included Meteor Impact, Leslie's Love. and Cindysmagicmoment.

Del Mar will not race from Friday through Sunday this weekend after 15 jockeys tested positive for the coronavirus in tests conducted Tuesday, the track said in a statement released Wednesday afternoon.

Joe Harper, the track’s chief executive officer, said racing will resume July 24.

“Canceling this weekend’s races will give us additional time to monitor the situation and give the individuals who tested positive additional time to recover,” Harper said in the track’s statement.

Charlatan and Gamine have been disqualified from victories at Oaklawn Park on May 2, and their trainer, Bob Baffert, has been suspended for 15 days, stewards at Oaklawn Park ruled in a notice sent to media on Wednesday.

Charlatan won a division of the Arkansas Derby, and Gamine won an allowance race, on the May 2 card, closing day of the Oaklawn meet. Both tested for excessive amounts of the legal medication lidocaine, which were confirmed via split sample earlier this month. The initial tests became public in late May.

Los Alamitos, currently conducting its evening meeting under probation following a series of recent equine fatalities, announced a multi-point plan Tuesday designed to enhance safety.

The plans were submitted to the California Horse Racing Board, which placed Los Alamitos on a 10-day probation on July 10 after six fatalities occurred in racing or training from June 1 through July 5. Last weekend, two additional horses were euthanized as a result of injuries sustained in racing or training.