Sponsored Content SportsEngine, a brand from NBC Sports Next is the leading provider of Sport Relationship Management (SRM) software, empowering athletes, parents, coaches, and sports organization administrators with tools and services to manage their organizations and sports lives. Read SportsEngine stories Cristiano Ronaldo Debuts for Manchester United May 21, 2021 | 0 minutes, 24 seconds read On this day, in 2003 Ronaldo made his Manchester United debut as a substitute for Nicky Butt on opening day of the 2003-04 season. August 16, 2003 Sport: Soccer Trivia sports in this article Soccer tags in this article Fan On This Day SportsEngine