anyone who can run freeballin or in the shorts liner only must have small balls or something. I have run in boxers twice and they were the most painfull days of my life. All that bouncing around, felt like someone hit me in the nuts with a 2x4.
I cant wear boxer breifs, they just smash everything down instead of lifting and seperating. I have always gotten ball chaffing when i wear boxer breifs.
They only way to go is breifs for running. Keeps the boys warm, shorts smelling good, and aviods the painful aftermath of having your balls bounce around for an hour. Find a pair with a good elastic around the leg holes, it will keep from just pressing your balls to your leg, instead it will seperate them and support them.