# 1991 PBA All-Filipino Conference

The 1991 Philippine Basketball Association (PBA) All-Filipino Conference was the second conference of the 1991 PBA season. It started on June 9 and ended on September 1, 1991. The tournament is an All-Filipino format, which doesn't require an import or a pure-foreign player for each team.

## Format

The following format will be observed for the duration of the conference:
* The teams were divided into 2 groups.
* Teams in a group will play against each other once and against teams in the other group twice; 11 games per team; Teams are then seeded by basis on win–loss records. Ties are broken among point differentials of the tied teams. Standings will be determined in one league table; teams do not qualify by basis of groupings.
* The top five teams after the eliminations will advance to the semifinals.
* Semifinals will be two round robin affairs with the remaining five teams. Results from the eliminations will be carried over. A playoff incentive for a finals berth will be given to the team that will win at least five of their eight semifinal games.
* The top two teams (or the top team and the winner of the playoff incentive) will face each other in a best-of-five championship series. The next two teams (or the loser of the playoff incentive and the fourth seeded team) dispute the third-place trophy in a best of three playoff.

## Elimination round
### Team standings

| Pos | Team | W | L | PCT | GB | Qualification |
| 1 | Diet Sarsi Sizzlers | 8 | 3 | .727 | — | Semifinal round |
| 2 | Purefoods Tender Juicy Hotdogs | 7 | 4 | .636 | 1 | Semifinal round |
| 3 | San Miguel Beermen | 6 | 5 | .545 | 2 | Semifinal round |
| 4 | Tivoli Milkmasters | 6 | 5 | .545 | 2 | Semifinal round |
| 5 | Alaska Milkmen | 6 | 5 | .545 | 2 | Semifinal round |
| 6 | Ginebra San Miguel | 4 | 7 | .364 | 4 | |
| 7 | Shell Rimula X | 4 | 7 | .364 | 4 | |
| 8 | Pepsi Hotshots | 3 | 8 | .273 | 5 | |

## Semifinal round
### Team standings

| Pos | Team | W | L | PCT | GB | Qualification |
| 1 | Purefoods Tender Juicy Hotdogs | 12 | 7 | .632 | — | Advance to the finals |
| 2 | Diet Sarsi Sizzlers | 12 | 7 | .632 | — | Guaranteed finals berth playoff |
| 3 | San Miguel Beermen | 11 | 8 | .579 | 1 | Qualify to finals berth playoff |
| 4 | Alaska Milkmen | 10 | 9 | .526 | 2 | Proceed to third-place playoff |
| 5 | Tivoli Milkmasters | 8 | 11 | .421 | 4 | |
| Pos | Team | W | L | Qualification |
| 1 | San Miguel Beermen | 5 | 3 | Qualify to finals berth playoff |
| 2 | Purefoods Tender Juicy Hotdogs | 5 | 3 | |
| 3 | Alaska Milkmen | 4 | 4 | |
| 4 | Diet Sarsi Sizzlers | 4 | 4 | |
| 5 | Tivoli Milkmasters | 2 | 6 | |

## Finals berth playoff

* Vintage
* August 20
* The ULTRA, Pasig

## Third place playoffs

* Vintage
* August 22
* The ULTRA, Pasig
* Vintage
* August 25
* The ULTRA, Pasig
* Vintage
* August 27
San Miguel Beermen 93, Alaska Milkmen 108 :
* Alaska wins series, 2–1 ||
* The ULTRA, Pasig

## Finals

* Vintage
* August 22
* The ULTRA, Pasig
* Vintage
* August 25
* The ULTRA, Pasig
* Vintage
* August 27
* The ULTRA, Pasig
* Vintage
* August 29
* The ULTRA, Pasig
* Vintage
* September 1
Purefoods TJ Hotdogs 107, Diet Sarsi Sizzlers 100 :
* Purefoods wins series, 3–2 ||
* The ULTRA, Pasig