ROCKFISH: In addition to his book THE SECRET POWER WITHIN, the following link is another example of Chuck Norris admitting that he sparred with Bruce Lee.
In regards to Louis Delgado, he was one of the best point fighters of the late 60's/early 70's, and the last fighter to defeat Chuck Norris in a point tournament. Delgado does a kata demonstration and throws a series of kicks in the famous backyard videos taken at the Lee residence. Delgado moved from NY to LA in the late 60's and according to a 1969 article in Black Belt magazine, Bruce created a new training regiment for Louis. In this same article, Delgado mentions that he sparred against Lee and that the sessions were humbling. In a 1974 Fighting Stars magazine interview, Delgado stated that Lee was the "toughest man I've ever faced."