Siso opened her bid with an easy 8-2 win against Korea's Song Suna.
This is the second time in the Malaysian tour this year that Siso, a University of San Carlos-South Grade School pupil, beat Suna. Their first encounter was in Penang last week.
After Song Suna, the Osaka Iridology and Dunlop-supported Siso clobbered Kedah's Ku Haz Lina Kuee,8-0.
Today, Siso is set to face another Korean in Park Soyeon.
Siso is also set to play in the doubles, but their assignments are yet to be known since the drawing of lots is yet to be done.
Before Siso, Tuburan's Vince Marc "Mac-mac" Tabotabo also won his second round assignment.
If Tabotabo wins his third round assignment, he will join Siso in the next round.