The Caesars Sportsbook Del Mar Derby is an American thoroughbred horse race run annually during the first week of September at Del Mar Racetrack in Del Mar, California.
A Grade II race open to three-year-old horses, it is contested on turf over a distance of one and one-eighth miles (9 furlongs).
Inaugurated in 1945 as the Quigley Memorial Handicap at a distance of 1+1⁄16 miles on dirt, it was renamed in 1948, modified to its present distance in 1950, and moved to turf in 1970.
In 2013, 24 sophomores passed the entry box so the race had to be split into two divisions.
In 2021, the race was presented for the first time by Caesars Sportsbook.