The KC Cougars games are a lot of fun. The teams are single A pro minor leagues. Not to split hairs, but this is pro baseball, not semi-pro - some of those players became instant mutimillionaires at 18 years old! They are tomorrow's stars and you can sit by the bull pen and talk to them.
I recommend it - they have entertainment between innings and if the weather is right, it makes for a fun day.
Actually, my son played against the Cougars on another team in the same league, so I'm a little biased. But it still is fun
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Brian