The first clip is seven seconds of footage titled, 'Shotokan Karate 101: Basic Ashi Barai'. http://www.youtube.com/watch?v=IbtN6_su3Kg This clip features one of my tokui-renzokuwaza, and may be useful (fun) for shobu-ippon newbies. In this case, you can clearly see, as I move in, I merely slip the opponents punches, as they have no potential. Prior to this, my mawashi geri feint draws the opponents COG high. The important point, in this particular ashi-barai, is slipping around the 'outside' of the opponents punch. This basic angle 'off the line', allows the sweep to take out both legs, via the 'scissors action', of the upper and lower body. This 'mock' tactic is one I reserved, for fighting kyu grades, or dan karateka with poor basics. I do not recommend 'openly' entering ma'ai, like in this footage (with no kamae), against any opponent, with average skill or better.
In the second video clip (titled 'Ippon-waza'), I am fighting my friend Phil Wilson, who recently got to the top 16, at the JKS World Cup in Okinawa. Here again, in this clip, I feint, then simultaneously slip my opponents attempted punch, and go for ashi-barai. In the process, Philip snatches my dogi with his punching hand. I capitalized on Phil's natural response, by turning, and immediately launching a jodan punch. This technique is clearly a finisher in a real fight, and therefore an 'Ippon'. If I had not 'tensed' to 'put the breaks on', serious damage would have been done. Although not the best example, it certainly demonstrates 'what a real ippon' is. There is no second chance. http://www.youtube.com/watch?v=rcLf7RGQ-MM