1991 PBA First Conference finals
The 1991 PBA First Conference finals was the best-of-7 basketball championship series of the 1991 PBA First Conference, and the conclusion of the conference's playoffs. Ginebra San Miguel and the Shell Rimula X played for the 48th championship contested by the league.
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| Dates | May 5–19, 1991 | |||||||||
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| Television | Vintage Sports (PTV) | |||||||||
| Radio network | DZAM | |||||||||
This series also serves as a rematch after Shell captured the championship in the same conference a year before when Ginebra (then known as the Añejo Rum 65ers) walked out of the playing court in the sixth and series-clinching game with Shell leading, 62-47 with 2:52 left in the second quarter.
Ginebra San Miguel won against Shell Rimula X in seven games to capture their third PBA title, coming from a 1-3 deficit. Ginebra's championship victory was the biggest PBA finals comeback in the league's history until the 2015–16 Philippine Cup finals when the San Miguel Beermen came back from a 0–3 deficit to defeat the Alaska Aces and win the championship series.