Joseph Juariza bailed his team out of danger with a lay-up in the dying seconds to secure their second win in as many games.
Juariza dished in 19 points while Aldrich Jo led the losing team with eight points as they absorbed their first loss.
In the other SBP match, USC NC B prevailed over USC SC, 39-37.
Marben Rabuya top scored for USC NC with 11 markers.
On the other hand, defending champion Don Bosco College thrashed USC South, 79-43, to lead in Bracket B in the Passerelle division with two wins against no loss.
University of Southern Philippines Foundation logged its first win, 61-59, over Cebu Institute of Technology.
The scores
Passerelle Division
Don Bosco College (79) - Lapitan 12, Bacalso 12, Parilla 10, Gabison 6, Escaño 6, Paracuelles 6, Diaz 4, Dela Torre 4, Tan 4, Reroma 3, Parcon 3, Rodriguez 3, Mellana 2, Garciano 2. USC South Campus (43) - Jagupit 11, Deligero 4, Cañares 4, Nacua 4, Igpit 4, Carbon 4, Ocampo 3, Oliva 3, Sepe2, Teehera 1.
USP (61) - Cabatingan 17, Bordalaba 11, Ducay 8, Tancinco 7, Alas 4, Pepito 3, Ferraren 3, Baron 2, Casolari 2, Sabaldan 2, Ancao 2. CIT (59) - Quiroga 15, Borgonia 8, Serrano 6, Maglasang 6, Gonzales 4, Mancera 4, Flores 4, Coyoca 2, Mingueto 2, Arla 2, Bancale 2, Macarat 2, Abejo 2. SBP Division
USC NC B (39) - Rabuya 11, Reoma 6, Lora 6, Su 5, Antigua 4, Sabesaje 2, Malan 2, Jaca 2, Piad 1. USC SC B (39) - Nacario 12, Ponteras 8, Sotes 7, Nalo 6, Arnoco 2, Diaz 1, Laya 1. USC SC A (47) - Juariza 19, Bacaltos 6, Purisima 6, Secapuri 4, Nwanaka 4, Naron 4, Nazareno 3, Uy 2, Ortega 2.
USC NC A (43) - Jo 8, Geopano 7, Arnejo 6, Bantolinao 6, Palapar 4, Abao 3, Asotique 3, Sotero 2, Romaguera 2, Gutierrez 2