This question is for the Shotokan tournament competitors: What is the main difference between JKA and WKF rules in competition? I've watched a lot of videos but I can't really tell what's going on. I've also tried looking for the official rulesets, but I can't find them for JKA comps to compare. From what I've been able to read and observe, WKF uses body armor under the gi, and the thicker gloves. JKA uses thin hand padding and no body armor. Also, I guess "ippon" in WKF is 3 points, but in JKA is 1 point. However, looking at videos it all looks the same. It also doesn't help that the JKA fights I've watched are all in Japanese. Also, I know that WKF includes Goju-ryu, Wado-ryu etc...in their comps along with Shotokan. Since the JKA was founded by Shotokan masters, are JKA tournaments "Shotokan-only," or do they also welcome competitors from other karate schools?