My personally view ....... I check the SIXGA website and notice that the ranking for ladies after Round 5 are listed below : 1 陈茗芳 2 苏盈盈 3 张玥 4 魏婉妮 5 Ng Yang Ce 6 洪黛欢 7 Tan Jing Xuan 8 Seow Hui Xian 9 Lim Sing Rong 10 牛宇超 From my experience of using another computer pairing software, Sevilla, it will start from the top to look for the pairing for 1st record, in this case is 陈茗芳, as 陈茗芳 has played with ranking No. 2 to No. 5, the next possible record is 洪黛欢. As for 苏盈盈, the next possible record is Ng Yang Ce, even with Ng Yang Ce, if both 陈茗芳 and 苏盈盈 win in Round 6, 陈茗芳 still have a better ranking than 苏盈盈 after Round 6 ...... The actual pairing for 苏盈盈 is Tan Jing Xuan eventually could be due to several reasons unless any computer pairing expert could help to explain the whole situation. SIXGA Pairing Software, Swissperfect is one of the good pairing softwares. If you still wish to find out more or want to give your observations, please approach SIXGA official