The cheapest health insurance you can get is medpay or PIP on your auto-insurance. Typically, pennies for thousands.
American ruggers travel by car for games, training, and going to the gym. We probably have a greater chance of getting in an auto-accident on the way to Fresno, than getting rucked over in Fresno.
Call your auto-insurance guy. If you buy online, the good companies will have this info on the site, plus an 800 number to speak to a human.