It isn't a true story. 'Bottom of the 9th' is a work of fiction that aims to entertain through an invented narrative rather than representing actual happenings.
I'm not sure specifically which work named 'bottom of the 9th based on a true story' you are referring to. It could be a movie, a book or something else. If it's a movie, it might be about a crucial moment in a baseball game (since the 9th inning is often a decisive part in baseball) that is based on real - life events.
Another possibility is that it's about the drama and pressure in the bottom of the 9th. It could be about how the players, the coaches, and the fans all felt during that tense moment. It might be based on a true - life event where the outcome of the game had far - reaching consequences for the team, the community, or even the players' careers.
I'm not sure specifically which 'bottom of the 9th true story' you're referring to. It could be about a baseball game where something significant happened in the bottom of the ninth inning. Maybe it's a story of a team making a great comeback in that final inning.
I don't have enough information to determine who the main characters are. It could be the players on the field, like the pitcher, the batter, or the fielders.
It's actually not based on a true story. The plot and characters are purely the imagination of the writers. They crafted the story to entertain and engage the audience rather than drawing from real-life happenings.