Summerly (March 31, 2002 â March 30, 2021) was an American Thoroughbred racehorse best known for winning the Grade 1 Kentucky Oaks in 2005. She was sired by 1990 Preakness Stakes winner, Summer Squall and out of the Mr. Prospector mare, Here I Go.
Summerly raced from age two through age four and was then retired. She was sold at the November 2006 Fasig-Tipton broodmare sale for $3.3 million to WinStar Farm of Versailles, Kentucky. In 2008 and again in 2009, Summerly produced a colt by Distorted Humor. She produced a colt by Tiznow named State Line. She also had a filly by Kentucky Derby winner Super Saver. In 2018, she produced a filly by Carpe Diem.
Summerly died of colic on March 30, 2021, at the age of 19.