https://www.youtube.com/live/CJXzSP0RvrI?si=fOKZ1DHOyMpncyyb
at 4:11:50
In the last game with Ma Long and Lin Gaoyuan vs the Singaporeans at 4-0 Ma long served to Quek, making it 5-0, then they changed sides and he served to Pang, making it 6-0. Why? Is that in the rule book or was it a mixup?