大概找了一下
...Did you know Texas still has a mutual combat law? In essence, dueling is still legal according to sections 22.01 and 22.06 in the Texas penal code.
The law states that any two individuals who feel the need to fight can agree to mutual combat through a signed for or even just verbal or implied communication and have at it (fists only, however). As long as no “serious” bodily injury occurs and both participants know what degree of risk they are hazarding, mutual combat is a defense for a criminal or civil suit that may be leveled against you....
https://goo.gl/r1wZZR
所以德州好像決鬥是合法的
武林高手、聖杯英靈、拔刀齋通通都要移民德州了？
會不會衍生出類似角鬥士的娛樂 嘻嘻