(b Boston, 17 May 1967)
US dancer, choreographer, teacher, and director. He studied locally and at the Boston Ballet School. He then danced for a year with Los Angeles Ballet (1983–4), spending a further six months training at the School of American Ballet before joining New York City Ballet in 1985, where he was promoted principal in 1989 and remained until 2008. He danced over 50 leading roles during this period and created roles in several works, including Robbins's Ives Songs and Quiet City, Martins's Les Gentilhommes, A Musical Offering, and Sleeping Beauty, Wheeldon's Carousel and American in Paris, among others, and works by Tharp, Taylor-Corbett, Tanner, and O'Day. He has also choreographed several works, including Ebony Concerto (mus. Stravinsky, NYCB, 1994), Glazunov pas de deux (NYCB, 1994), and a version of An American in Paris (mus. Gershwin, Gershwin Centennial Gala, 1998). In 1994 he became director of the ballet programme at New York State Summer School as well as guest teacher at the School of American Ballet, and in 2007 became director of the Vail International Dance Festival.