Answer
No, Sergei Diaghilev was not a choreographer himself. Instead, he was a Russian art patron, impresario, and ballet producer. He is best known for founding the Ballets Russes, a ballet company that revolutionized the world of dance and had a profound impact on the development of modern ballet. Diaghilev's contributions lie in his visionary leadership, artistic direction, and collaborations with talented choreographers, composers, dancers, and visual artists.