P HNOM PENH - In the first of two lightweight tournament fights Sunday at CTN, Long Sophy stopped Naem Chenda in the fourth round with a knee. Naem Chenda fought smartly throughout, countering and moving well, but he couldn't take the power shots. Long Sophy scored an eight-count in the second round with a four-punch combination and knee at the bell, and throughout rounds three and four it looked as if Naem Chenda would go at any time. Countering a straight right hand in the fourth, Long Sophy landed a knee clean to the solar plexus to end the fight.