The 1991 Montreal Expos season was the 23rd season in franchise history. After several winning seasons, the Expos faltered in 1991, winning only 20 of its first 49 games. Manager Buck Rodgers was replaced as manager by Tom Runnells. The team ultimately finished 71–90. The highlight of the season was Dennis Martinez pitching a perfect game at Dodger Stadium on July 28, 1991.

Offseason

Spring training

The Expos held spring training at West Palm Beach Municipal Stadium in West Palm Beach, Florida – a facility they shared with the Atlanta Braves. It was their 15th season at the stadium; they had conducted spring training there from 1969 to 1972 and since 1981.

Regular season

On May 23, 1991, the Expos were no-hit by the Phillies' Tommy Greene. Greene was starting for only the second time in the season and 15th time in his major league career, and was pitching in place of Danny Cox who had suffered a pulled groin in his last start. Greene became the first visiting pitcher to hurl a no-hitter in Montreal's history as the Phillies defeated the Expos, 2-0 before an Olympic Stadium crowd of 8,833.

Season standings

Record vs. opponents

Opening Day starters

Notable transactions

The Perfect Game

On July 28, 1991, Dennis Martínez became the first Latin-born pitcher to throw a perfect game, the 13th in major league history, against the Los Angeles Dodgers.

Scorecard

July 28, Dodger Stadium, Chávez Ravine, California

Roster

Player stats

Batting

Starters by position

''Note: Pos = Position; G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Other batters

''Note: G = Games played; AB = At bats; H = Hits; Avg. = Batting average; HR = Home runs; RBI = Runs batted in''

Pitching

Starting pitchers

Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Other pitchers

Note: G = Games pitched; IP = Innings pitched; W = Wins; L = Losses; ERA = Earned run average; SO = Strikeouts

Relief pitchers

Note: G = Games pitched; W = Wins; L = Losses; SV = Saves; ERA = Earned run average; SO = Strikeouts

Award winners

All-Stars

1991 Major League Baseball All-Star Game

Farm system

LEAGUE CHAMPIONS: West Palm Beach, Jamestown, GCL Expos