For all those secret boxers out there, it’s time to dust off that heavy bag and get some work in.
Your player will use a non-$400 bat, and swing FULL POWER into the bag. They should be trying to break it on every swing. This can be done alternatively with a tire, old cushions, or anything else with some give but still solid.
Would be great to keep some balance and take left handed swings as well. With any luck, we could even develop a switch hitter or two!