From Wikipedia
Fight Night is a 1985 boxing video game. It was developed by Sydney Development Corporation and published by Accolade in the United States and by U.S. Gold in the United Kingdom. It was released for various systems of the era including the Apple II, Atari 8-bit computers, Atari ST, Atari 7800 and the Commodore 64.
The game included both a single player mode and multiplayer mode. Also featured was the ability for the player to customize the player's boxer. Twelve boxer characters are featured in the game. The version on the Atari 7800 is especially clunky and slow paced.
The Atari 8-bit version was later republished on cartridge by Atari for the XEGS