October 30, 2010, Kyle Busch beat Aric Almirola by .002 seconds to win the Mountain Dew 250, the second closest winning margin in history. On May 15, 2015, Kasey Kahne beat Erik Jones by .005 seconds to win the North Carolina Education Lottery 200. Two races have tied for closest margin for a photo finish in the Cup Series: The 2003 Carolina Dodge Dealers 400 at Darlington Raceway, where Ricky Craven won over Kurt Busch by 0.002 seconds. The 2011 Aaron's 499 at Talladega Superspeedway, where drafting help from Dale Earnhardt Jr. allowed Jimmie Johnson to win the race by 0.002 seconds over Clint Bowyer. Although not officially in a points race, in 2001, Mike Skinner won a Gatorade Duel at Daytona by inches over Dale Earnhardt Jr. Horse racing In horse racing, photo finishes determine accurately when the horses hit the finish line. This developed in the late 1930s, by the end of which strip cameras were used for photo finishes; prior to this point high-speed motion picture cameras were used, but did not provide sufficient temporal resolution. Stewards at the racetrack usually put up PHOTO status on the races during these photo finishes; the status of objection or inquiry can also trigger if other horses or jockeys somehow interfered in the horse rankings and can factor in dead heats. The most notable dead heat was in the 1989 Hambletonian Stakes, with both Park Avenue Joe and Probe finishing in a dead heat. A photo finish decided the winner of the 2005 running of the Japan Cup, which was given to Alkaseed, narrowly defeating Heart's Cry. And in 2011 with new digital technology recording vision at 10,000 frames per second, Dunaden was declared a winner over Red Cadeaux in the $6 million Melbourne Cup. See also Dead heat (racing) List of dead heat horse races Fully automatic timing Slit-scan photography Streak camera References External links A description of how the cameras work with examples Cabinet Magazine: "A Wrinkle in Time" Sport of athletics terminology Horse racing Photographic techniques Sports officiating technology