Sally Mae won her first game, but lost in the second while her brother, Niño, lost his first assignment but got lucky with a default game in the second.
Sally Mae clobbered JV Custodio, 6-0, 6-1, but bowed to Shaine Olivarez in the decider, 4-6, 6-4, 3-6.
"Naputol ang strings sa duha ka racket ni Em-Em. Kang Niño na iya gamit nga racket," said Sally, mother of the young Siso siblings.
Niño, for his part, lost to Juan Lorenzo Ferrer, 1-6, 2-6 but got a no-sweat win over a no-show Juan Paolo Cansino of Cagayan.
The Siso siblings, who are supported by Jonathan Guardo, Nick Pepito and Casino Español tennis group still has a chance to represent the country in New Delhi, India on April since the try-out is on a round-robin format. - Caecent No-ot Magsumbol