Guerrero needed an extra set to beat University of the Philippines Ronielle Kagalingan, 11-5, 2-11, 11-2, to advance against Far Eastern Universitys Ma. Theresa Sebastian, a 13-10, 13-12 winner over University of Santo Tomas Kathleen Anasco.
Chan, on the other hand, recovered from a first-set loss to prevail over USTs Rose Ann dela Cruz, 2-11, 11-2, 11-6 and force a semifinal showdown with FEUs Criselda Sarabia, who scored an 11-2, 11-2 victory over UEs Jane de Jesus.
In the boys singles division, UEs Heidenberg Dimarucut rallied past USTs Reynaldo Selga, 5-15, 15-13, 15-3, to advance against La Salles Rhaul Angeles, a 15-2, 15-0 winner over Nueva Ecija University Science and Technologys Alfredo Angeles.
FEUs Wilson Frias downed Technological Institute of the Philippines Edison Serrano, 15-6, 15-2, to advance against UEs Rodil Sertan, who conquered La Salles Rodel Dawal, 15-6, 15-8.
In the boys doubles division, La Salles Rhaul Angeles and Michael Paclibar downed FEUs Wilmer Frias and Jimson Dionisio, 15-6, 15-13, to arrange a Final Four meeting with UPs Marvin Cumbe and Poppert Bernadas, 15-9, 15-6 winners over TIPs Marlon Dalisay and Edison Serrano.
Also advancing were UEs RJ Cruz and Edison Cupcupin, who beat Adamson Universitys Darwin Roxas and Darius Bueno, 15-7, 15-3, and USTs Raymond Vega and Rabdy Felipe, who won over FEUs Jayse Frias and Recson Salvaleon, 15-10, 15-10.
In the girls doubles category, FEUs Criselda Sarabia and Ma. Theresa Sebastian defeated Sacred Hearts Jolywin Rodil and Ma. Kathleen Glindro, 15-0, 15-8, to set up a semifinal duel with UPs Sarah and Sheryl Caraig, who won by default over UEs Russell Tatel and Karen Escalona.
USTs Kathleen Anasco and Lyka Leonor downed UEs Carol Capiral and Hazel Ann Andres, 15-7, 15-2, to advance against La Salles Therine and Paula Chan, who walked over St. Scholasticas Jennely Vicencio and Mary Ann Catalan.
In the mixed doubles, La Salles Michael Paclibar and Paula Chan outplayed UPs Allan Cardenas and Sheryl Caraig, 15-10, 15-10, USTs Reynaldo Selga and Lyka Leonor outclassed UEs Charles Agatep and Russell Tatel, 15-4, 15-3, FEUs JB Villamedez and Cherry Aberilla downed teammates Dan Gutierrez. and Jovalyn Cabanero, 15-11, 15-6 and UEs Edison Cupcupin and Jane de Jesus prevailed over La Salles Rodel Dawal and Michelle Guerrero, 15-8, 15-0, to earn semifinal berths.
The semifinal and final rounds will be played at the SM Megamall Atrium on Oct. 6-7. Prizes at stake are P25,000 in cash, trophy and Sony Ericsson T230 mobile phone (champion), P15,000 in cash, trophy and P1,000 worth of gift certificate from Advanced Speed and Academic Professionals (first runner-up) and P8,000 in cash and trophy (second runner-up). Exhibition games featuring celebrities Paolo Ballesteros, K Tatlonghari, Meryll Soriano and Brad Turvey will also be held on Oct. 7.