Triple Crown classic race wins:Preakness Stakes (2009)Rachel Alexandra (foaled January 29, 2006) is a retired American Thoroughbred racehorse and the 2009 Horse of the Year.

Medaglia d'Oro (foaled 1999, Kentucky) was a successful multiple Grade 1 Stakes winner and earned $5,754,720 in his racing career.

Morrison did not breed Lotta Kim in 2009, but returned her to Medaglia d'Oro in 2010, having declined numerous offers to sell the mare in the wake of Rachel Alexandra's success.

[3] Lotta Kim produced a bay filly by Medaglia d'Oro on February 27, 2011, at Heaven Trees Farm near Lexington, Kentucky.

The foal, named Samantha Nicole, sported a star and broken stripe very similar to that of her full sister, Rachel Alexandra.

Lotta Kim produced a chestnut colt named Dolphus in 2013, sired by 2010 Preakness Stakes winner Lookin At Lucky.

"Rachel Alexandra was foaled on January 29, 2006, at Dr. Dede McGehee's Heaven Trees Farm near Lexington, Kentucky.

Morrison rarely sells the first couple of foals out of his mares, but he almost made an exception with Rachel Alexandra, entering her in the 2006 Keeneland November Sale as a weanling.

[4] In August 2007, Morrison sent Rachel Alexandra to Diamond D Ranch in Lone Oak, Texas, where Jimmy (Scooter) Dodwell broke her in.

Borel said he learned not to hold back Rachel Alexandra, even if she wanted to run the first quarter-mile in a fast 22 seconds or the half-mile in 44.

Gabby's Golden Gal broke the quickest and was sent to the lead immediately by jockey Victor Espinoza as she set a pace of 23.75, 47.46, and 1:11.81 over the fast main track.

Turning for home, Calvin Borel nudged Rachel Alexandra and she eased past the pacesetter to take the lead at the 1/4 pole.

Once in front of the tiring Gabby's Golden Gal, Rachel Alexandra sprinted away from the field to win by more than 201⁄4 lengths in a time of 1:48.87, just 0.33 seconds off Bird Town's stakes record.

Shortly after her 201⁄4 length win, by far the largest in the race's history, it was announced that Rachel Alexandra was sold to Jess Jackson's Stonestreet Stables and Harold T. McCormick.

Jess Jackson, owner of Curlin, paid the US$100,000 supplemental fee that allowed her to race in the Preakness Stakes.

On June 27, 2009, Rachel Alexandra ran in the $300,000 Grade 1 Mother Goose Stakes at Belmont Park, with Calvin Borel as jockey.

[16] On August 2, 2009, Rachel Alexandra ran in the $1.25 million Grade 1 Haskell Invitational at Monmouth Park at 1+1⁄8 miles before 37,090 people.

On September 5, 2009, Rachel Alexandra ran in the $750,000 Grade 1 Woodward Stakes against older male horses at Saratoga Race Course.

She also was the first 3-year-old filly to win a grade I route dirt race against older males in New York since Lady Primrose won the Manhattan in 1887.

On June 12, 2010, as the 1–10 favorite in a five-horse field, Rachel Alexandra won the 1+1⁄8 mile $214,000 Grade 2 Fleur de Lis Handicap in its 36th running at Churchill Downs.

[24] Rachel Alexandra's fourth start in 2010 was Monmouth Park's July 24 Lady's Secret Stakes at a mile and an eighth.

On 29 August 2010, Rachel Alexandra under Calvin Borel finished second by a length to Persistently at the 1+1⁄4 in the $300,000 Personal Ensign Stakes at Saratoga Race Course, a potential prep for the Breeders' Cup Classic.

Rachel Alexandra's first mating was with Curlin (2007 and 2008 American Horse of the Year) on 22 February – who also raced for owner Jess Stonestreet Jackson Jr.

Indy and Ghostzapper), Lady's Secret (Seattle Slew and Skip Away), Moccasin (Round Table), Twilight Tear (Whirlaway), and Regret (Man o' War).

Jess's Dream is the first-ever offspring of two Preakness Stakes winners, Curlin having won the race in 2007 and Rachel Alexandra in 2009.

The next day, Rachel Alexandra was transported to Rood & Riddle Equine Hospital in Lexington, Kentucky, where she underwent surgery on her small colon which was injured during a difficult foaling.

As of February 17, Rachel Alexandra remained in serious but stable condition, and she was gradually transitioning back onto solid foods.

[30] On March 7, Rachel Alexandra was reported to be recovering well after undergoing a surgical procedure to drain an abscess adjacent to her reproductive tract and rectum.

Due to her win in the Spinaway, Rachel's Valentina earned a spot in the 2015 Breeders' Cup Juvenile Fillies.

[34] Two times per year, usually in June and September/October, Stonestreet Farm hosts "See Rachel Day" where contest winners can visit with the mare.