"Block the leg!  Kick the inside!  Knee, knee!" The fervor of audience commentary, at times simultaneously, made it difficult to hear individual commentary, unless it quieted down for a moment.   On Saturday, Sept. 19, male and female warriors sparred in front of an energetic audience at the first amateur "Muay Thai Origins: Battle at the Wat" tournament in South Sacramento.  Promoted and sponsored by Andy Kensamphaph, founder of Sacramento's Muay Thai Lao Kickboxing Academy, the event took place at Wat Lao Saoputh Buddhist Temple in South Sacramento.  As a non-profit fundraiser, all proceeds went to the temple. South Sacramento resident Tommy Prongfah brought his children to show the