In 1997, De Niro was vice champion of the stallion performance test in Adelheidsdorf with a score of 141.93 points and champion of rideability with a score of 145.41 points.
In 2000, he won Grand Prix dressage tests at the age of seven.
In 2001, he won the German Championships of Professional Riders with his rider Dolf-Dietram Keller.
In 2002, he won international Grand Prix and Grand Prix Special dressage tests in Saumur and Berlin.
In 2003, he was the winner of the German Dressage Derby in Hamburg.
In 2004, De Niro provided the champion stallion Dancier at the licensing in Verden, following two vice champions in previous years.
In 2005, De Niro was dam sire of the champion stallion in Verden.
In 2006, with 14 descendants at the German Young Horses Championships, De Niro provided the largest contingent.
In 2007, De Niro’s son Deveraux became World Champion of the six-year-old dressage horses in Verden. Several of De Niro’s offspring have been victorious in Grand Prix dressage competitions.v
In 2008, De Niro was honoured by the Hanoverian Society with the title “Stallion of the Year”.
In 2009, De Niro provided two European champions as well as Dablino, the most successful Grand Prix newcomer.
In 2010, De Niro was awarded place five of the World Breeding Federation for Sporthorses with 10 internationally successful offspring at Grand Prix-level. His son Dablino won the Team Bronze Medal with rider Anabel Balkenhol in Kentucky at the world championships. Desperados by De Niro and his rider Falk Rosenbauer won the German Dressage Derby in Hamburg.
In 2011, the descendants of De Niro won a total amount of more than 230,000 Euros. The overall amount of prize value of his descendants reached more than 1,000,000 Euros.
In 2012, De Niro is ranked first in the ranking of the World Breeding Federation for Sports Horses. Therefore he is the best dressage stallion of the world.
In 2013, De Niro confirmed his status as best dressage stallion of the world. The German dressage team with Desperados and D‘Agostino won the Gold Medal at the European Championships in Herning. The stallion by De Niro – Rosario, bred by Josef Greten, became champion stallion of the licensing in Oldenburg and was sold for sensational 910,000 Euros to the Danish Olympic rider Andreas Helgstrand.
In 2014, the German Dressage Team including Desperados and rider Kristina Sprehe and D‘Agostino with rider Fabienne Lütkemeier won the Team Gold Medal at the World Equestrian Championships in Normandy. The overall amount of prize value of De Niro‘s descendants in Germany reached more than 2,400,000 Euros.
In 2015, Desperados with Kristina Bröring-Sprehe and Delgado with Beatriz Ferrer-Salat won Silver and Bronze at the European Championships in Aachen.
By a wide margin, De Niro is the worlds best dressage stallion again.
More than 70 licensed stallions originate from De Niro. His offspring are sought after everywhere and they are always successful.
Breeding Value Scores Han : Dressage Young horse (123) Competition (135) Own achievement (162) Jumping Young horse (67)
Competition (74) own achievement (51) Riding Type (103) Conformation (120) Dressage (110) Jumping (74)