Hong Kong's Rex Tso Sing-yu connects with a left to the head of tough Thai fighter Rusalee Samor in their six-round flyweight bout on the Fists of Gold II bill in Macau last night.

Tso kept his unbeaten streak intact as he survived the nerve-wracking wait all boxers fear - for the judges' scorecard. In his toughest fight so far, Tso, 26, was a mighty relieved man as judges gave him a unanimous decision to the cheers of the crowd. "I was so nervous. I just didn't want people to be disappointed if I had lost," said Tso, who extended his winning record to double figures, 10-0-0, 6 KOs. "When I heard the first judge's score and he made it out as a draw, I was expecting the worst. Samor was really good, and he got the best of me tonight."

The Hong Kong fighter was fighting in Macau for the first time and he struggled against the Thai at times. Samor (20-5-2, 9 KOs) is no slouch. He was ranked eighth by the International Boxing Federation (IBF) last year and he used every trick in the book. "I had him against the ropes and I pounded him with a few good shots, and I knew his feet went wobbly, but he's so experienced. He continued to clinch me and rest on me. This is a very experienced fighter," said Tso. "I don't rate my performance very highly. I didn't do many things I was supposed to do. But I still won, I am glad for that."

Tso seemed to have the better of his Thai opponent in the early rounds as he took advantage of his longer reach. He dominated the second round with good jabs and threw good combinations. His stinging punches were effective, but Samor landed a hard left that rocked Tso in the fourth round.

Both fighters were exhausted in the last two rounds before their fate was left in the hands of the judges. "So many people have supported me and the whole audience erupted in joy when they found out I had won. I felt the same way. What a great relief," said Tso.

Tso's manager and trainer, Jay Lau Chi-yuen, said it was an evenly matched contest.

"Tso never draws his bouts. I was also nervous when they counted the scores. His opponent was very experienced indeed and was grabbling Rex. Whenever Rex went in with a few power shots, he would grab, clench and rest. It was good experience for us though," said Lau. "I don't know what's Rex's next move. He might fight in Macau again in November, but it all depends on promoters Top Rank. But we are going to get tougher and tougher opponents."