Rextel made a come-from-behind victory over Big Three, 86-82, to claim a finals ticket.
Big Three jumped off to a rousing start and was enjoying a comfortable lead until they suddenly collapsed in the final quarter.
Fred Mier, Joel Aguillon, Jeffrey Topacio and Alvin Puno got most of the credits for Rextel's win.
Sanalva, on the other hand, edged-out VSC, 89-88.
Thanks to the heroics of Jolas Lastimosa for converting two charities that spelled victory.
The scores
Game 1
REXTEL (86) - Aquillon 20, Mier 18, Topacio 11, Puno 10, Nuneza 6, Gallardo 6, Herbito 5, Villamor 3, Denoy 3, Reynes 2, Pancho 2
BIG 3 (82) - Titong Perez 20, Toking Perez 15, Sala 11, Lahoylahoy 8, Pacaña 7, Santillan 7, Robusto 4, Cubar 4, Hortelano 3, Bacalla 3
Game 2
SANALVA (89) - Basallo 33, J.Medado 10, Lastimosa 10, Marquez 10, Bejec 10, Consuerga 8, Albarando 4, F.Medado 4
VSC (88) - Dela Peña 24, Petallar 14, Celestial 14, Dapiton 7, N.Villar 5, A.Gonzaga 4, Santillan 4, J.Villar 4, Janier 4, Awit 4, Blando 2, J.Gonzaga 2