http://polariswushu.net/blog/2014/07/24 ... -sparring/link has some recent sparring with a golden gloves boxer who been training since 11 years old last month. The guy has a incredibly fast jab. we were both pretty tired and over heated in the non-air conditioned approx. 98 degree gym. this is after we had already done running, pad work, heavy bag, and jump roping.