 He was selected late in the first round of the 1972 NBA Draft as the 27th overall pick by the Atlanta Hawks.Ingelsby played professionally for the Atlanta Hawks (NBA) in the 1973-74 season, for the Spirits of St. Louis of the (American Basketball Association) in the 1974-75 season, and for the San Diego Sails in the 1975-76 season.Ingelsby is the father of Delaware coach Martin Ingelsby, and coached his son at Archbishop Carroll High School.