<P> Donnie, now known as "Hollywood Donnie", defeats a local fighter, and word gets out that he is Creed's illegitimate son . Rocky receives a call from the handlers of world light heavyweight champion "Pretty" Ricky Conlan, who is being forced into retirement by an impending prison term . He offers to make Donnie his final challenger--provided that he change his name to Adonis Creed . Donnie balks at first, wanting to forge his own legacy . However, he eventually agrees . </P> <P> While helping Donnie train, Rocky learns he has non-Hodgkin's lymphoma . He is unwilling to undergo chemotherapy, remembering that it was not enough to save Adrian when she had ovarian cancer . His diagnosis and the fact that his best friend and brother - in - law Paulie Pennino--Adrian's brother--has now died in addition to Adrian, Apollo, and his old trainer, Mickey Goldmill, further force him to confront his own mortality . Seeing Rocky shaken, Donnie urges him to seek treatment . </P> <P> Donnie fights Conlan at Goodison Park in Conlan's hometown of Liverpool, and many parallels emerge between the bout that ensues and Apollo and Rocky's first fight forty years earlier . First, before entering the ring, Donnie receives a present from Mary Anne--new American flag trunks similar to the ones Apollo and later Rocky wore . Additionally, to the surprise of nearly everyone, Donnie gives Conlan all he can handle . Conlan knocks Donnie down, but Donnie recovers to knock Conlan down for the first time in his career . Donnie goes the distance, but Conlan wins on a split decision (just as Apollo retained his title by split decision against Rocky). However, Donnie has won the respect of Conlan and the crowd; as Max Kellerman puts it while calling the fight for HBO, "Conlan won the fight, but Creed won the night ." Conlan tells Donnie that he is the future of the light heavyweight division . </P> <P> The film ends with Donnie and a frail but improving Rocky climbing the 72 steps outside the entrance of the Philadelphia Museum of Art . </P>

Who does creed fight at the end of the movie