World Champ(1990)

World Champ is a boxing game that has many similarities to Data East's Ring King. You can play a one player "Ranking" mode, where you can build your boxer's stats up while climbing the ladder to eventually challenge for a championship in one of the four weight classes. There is also a two player vs. mode where you and a friend can square off. A tournament mode allows up to 8 players participate in a bracketed tournament.