1989 AL Pennant
The earthquake shook the ground during the World Series, but the A's had already claimed the pennant.
The 1989 American League Pennant is the Oakland Athletics' most emotionally charged pennant in franchise history, won over the Boston Red Sox in a five-game ALCS that set the stage for a World Series forever defined by the Loma Prieta earthquake. The A's, led by manager Tony La Russa and a stacked lineup featuring Jose Canseco, Mark McGwire, Rickey Henderson, Dave Stewart, and Dennis Eckersley, captured the AL West with a 98-win season and then claimed the pennant before facing one of the most extraordinary circumstances in baseball history.
The pennant is inseparable from the 'Bay Bridge Game'—Game 3 of the World Series at Candlestick Park, suspended in the seventh inning when the 6.9-magnitude earthquake struck the San Francisco Bay Area on October 17, 1989. The game was resumed weeks later and the A's ultimately swept the Giants to win the World Series. For Oakland fans, the 1989 pennant is less a trophy and more a story of resilience, rivalry, and a city that refused to let a natural disaster silence its baseball.
Quick Facts
- Franchise
- Oakland Athletics
- Season
- 1989
- League
- American League
- Alcs opponent
- Boston Red Sox
- Alcs result
- Won 4–1
- Manager
- Tony La Russa
Lore & Background
The 1989 A's were built on a foundation of power and pitching that made them the AL's most feared club that autumn. Jose Canseco and Mark McGwire formed a middle-of-the-order duo that could clear the fence from either side of the plate, while Rickey Henderson provided the speed and on-base pressure that stretched every opposing defense. On the mound, Dave Stewart and Mike Moore anchored the rotation, and Dennis Eckersley locked down the ninth with the kind of authority that made late-inning tension feel like a formality. Tony La Russa's management was meticulous, and the A's' 98 wins reflected a team that was dominant across every phase of the game.
The ALCS against Boston was a decisive series. The Red Sox, riding their own star power and the electric hostility of the rivalry, managed one win, but the A's closed it out in five games on October 7, 1989—well before the earthquake. That game was played at Fenway Park in Boston, where the A's clinched the pennant with a 4–1 series victory. The earthquake would come later, during Game 3 of the World Series at Candlestick Park on October 17, 1989. The A's were ahead in the seventh when the earth itself intervened. The Loma Prieta earthquake, centered near Loma Prieta in the Santa Cruz Mountains, rattled the ballpark, cracked the Bay Bridge, and killed sixty-three people across the region. The game was suspended, the players and fans were evacuated, and for a long, uncertain stretch no one knew if the World Series would be decided that day at all.
It was. The game resumed 10 days later on October 27, 1989, the A's held on to win, and the series was over. The pennant was secured not just by baseball skill but by the sheer refusal of a community to let tragedy erase its story. The subsequent World Series sweep by the Giants cast a shadow, but for Oakland, the 1989 pennant endures as the season the team played through the most impossible circumstances imaginable and still found a way to win the World Series.
Reader's Guide
The 1989 AL Pennant was the culmination of a season in which the A's dominated the AL West with 98 wins, powered by a lineup that paired Canseco's speed-and-power with McGwire's raw force and Henderson's constant pressure on the basepaths. Tony La Russa's A's were a complete team: Stewart and Moore gave them a rotation that could go deep into series, and Eckersley made the late innings a numbers game in Oakland's favor.
The ALCS against Boston was the rivalry's defining autumn. The Red Sox were competitive, the games were tight, and the series swung back and forth until Game 5 at Candlestick Park became the stage for the most unusual pennant-clinching moment in baseball history. The Loma Prieta earthquake struck in the seventh inning, suspending the game and the city. The resumption was as much a civic act as a sporting one.
Winning that game gave the A's the pennant and a World Series berth. They were swept by the Giants, but the pennant itself—earned through a season of excellence and a night of impossible circumstances—remains one of the most talked-about and emotionally resonant honours in Athletics history. It is the pennant that is remembered not just for the score, but for what surrounded it.
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