Reporting from Las Vegas -- Lyoto Machida's fights may lack continual action, but as he proved in a powerful display of punches that made him the Ultimate Fighting Championship's light-heavyweight champion Saturday night, a sudden flurry is his trademark. Machida (15-0) unleashed a barrage of second-round blows set up by a devastating left-handed punch that backed up Rashad Evans in his first title defense. The Brazilian challenger further hurt Evans with a powerful right, then a crushing left that caused Evans to crash to the mat. Evans' head circled on the way to mat impact and he was left prone...