Baseball stars

Baseball Stars is a baseball video game developed by SNK. It was released first as a 2-player arcade game and was later released for the NES in 1989. It the first baseball game to have battery backup on any console. Baseball Stars was also the first sports game for the NES to have a create a player feature, giving gamers the power to name their players, as well as their teams. In 1991, a sequel, Baseball Stars 2, was released by Romstar, but it was far less popular than the original.

Original description:

Player, manager, owner... You can do it all in Baseball Stars! Make your own teams and leagues; hire, fire, and trade players; develop your players from inexperienced rookies into veteran pitchers and hitters. Play against a friend or challenge the computer - you'll never have to worry about being rained out again!

"...The most comprehesive baseball simulation available for the Nintendo Entertainment System... For grand slam game play and plenty of options, Baseball Stars is the best!"

Instructions

Enter - start (pause);    Arrows - move players while fielding or batting;

Z - to select players, teams, etc. Also use to control batting, running, pitching, and fielding. Press to make player changes during time out;

X - to go back one screen to correct mistakes when selecting teams, players, etc. When your team is up to bat, use "X" for base running and stealing bases. When pitching, use "X" to bring up the pick-off screen, or to tag runners out;

You can change keyboard settings, save (F5) and load (F8) the game.
Put your mouse over the game and choose your settings, you can also play the game in fullscreen.