Longest MLB Winning Streaks In The 2021 Season

Which MLB team had the longest winning streak in the 2021 season?

The St. Louis Cardinals had the longest winning streak within the 2021 regular season at 17 straight games. During this streak they beat their opponents by an average of 3.6 runs. The streak started on Sep 11, 2021 and ended on Sep 28, 2021. In the playoffs, the Cardinals made the NL Wild Card where they lost to the Los Angeles Dodgers.

Were there any historic MLB winning streaks in the 2021 season?

Yes, one winning streak during the 2021 MLB season is in the all time top 50 winning streaks in the same season. The 17 game winning streak by the St. Louis Cardinals is the 12th longest same season winning streak in MLB history.

Longest 2021 MLB Winning Streaks

Team Winning Streak Start End Result
1 St. Louis Cardinals 17 Sep 11 Sep 28 Lost NLWC
2 New York Yankees 13 Aug 14 Aug 27 Lost ALWC
Oakland Athletics 13 Apr 9 Apr 24 Missed Playoffs
4 Houston Astros 11 Jun 13 Jun 24 Lost WS
Milwaukee Brewers 11 Jun 22 Jul 3 Lost NLDS
Tampa Bay Rays 11 May 13 May 24 Lost ALDS
7 Atlanta Braves 9 Aug 13 Aug 22 Won WS
Boston Red Sox 9 Apr 5 Apr 14 Lost ALCS
Los Angeles Dodgers 9 Jun 25 Jul 4 Lost NLCS
Los Angeles Dodgers 9 Aug 13 Aug 21 Lost NLCS
San Diego Padres 9 May 14 May 23 Missed Playoffs
San Francisco Giants 9 Sep 5 Sep 14 Lost NLDS
Tampa Bay Rays 9 Aug 21 Aug 31 Lost ALDS
14 Boston Red Sox 8 Jun 25 Jul 2 Lost ALCS
Los Angeles Dodgers 8 May 17 May 25 Lost NLCS
Los Angeles Dodgers 8 Apr 9 Apr 17 Lost NLCS
Philadelphia Phillies 8 Aug 1 Aug 8 Missed Playoffs
San Diego Padres 8 Jun 17 Jun 25 Missed Playoffs
Toronto Blue Jays 8 Sep 1 Sep 9 Missed Playoffs
20 Boston Red Sox 7 Sep 14 Sep 22 Lost ALCS
Chicago Cubs 7 Aug 31 Sep 6 Missed Playoffs
Detroit Tigers 7 Jul 17 Jul 22 Missed Playoffs
Los Angeles Dodgers 7 Sep 26 Oct 3 Lost NLCS
New York Mets 7 May 5 May 12 Missed Playoffs
New York Yankees 7 Sep 20 Sep 28 Lost ALWC
Oakland Athletics 7 Aug 4 Aug 12 Missed Playoffs
Oakland Athletics 7 Jun 11 Jun 18 Missed Playoffs
San Francisco Giants 7 Sep 24 Oct 1 Lost NLDS
29 Atlanta Braves 6 Sep 24 Sep 30 Won WS
Chicago Cubs 6 May 23 May 29 Missed Playoffs
Chicago White Sox 6 May 7 May 13 Lost ALDS
Chicago White Sox 6 Sep 26 Oct 2 Lost ALDS
Cincinnati Reds 6 Apr 3 Apr 9 Missed Playoffs
Cincinnati Reds 6 Jun 11 Jun 16 Missed Playoffs
Houston Astros 6 May 11 May 16 Lost WS
Houston Astros 6 Jul 1 Jul 7 Lost WS
Kansas City Royals 6 Jul 20 Jul 26 Missed Playoffs
Los Angeles Angels 6 Jun 7 Jun 13 Missed Playoffs
Los Angeles Dodgers 6 Sep 10 Sep 15 Lost NLCS
New York Mets 6 Aug 28 Sep 4 Missed Playoffs
New York Yankees 6 May 18 May 23 Lost ALWC
Philadelphia Phillies 6 Aug 27 Sep 2 Missed Playoffs
San Francisco Giants 6 Aug 7 Aug 13 Lost NLDS
Seattle Mariners 6 Sep 19 Sep 24 Missed Playoffs
St. Louis Cardinals 6 Aug 10 Aug 15 Lost NLWC
St. Louis Cardinals 6 Apr 29 May 5 Lost NLWC
Tampa Bay Rays 6 Jul 4 Jul 10 Lost ALDS
48 Boston Red Sox 5 Jun 3 Jun 7 Lost ALCS
Chicago Cubs 5 Jun 8 Jun 13 Missed Playoffs
Chicago Cubs 5 May 4 May 8 Missed Playoffs
Chicago White Sox 5 Jul 6 Jul 11 Lost ALDS
Chicago White Sox 5 Jun 27 Jul 2 Lost ALDS
Chicago White Sox 5 May 27 May 31 Lost ALDS
Cincinnati Reds 5 Aug 4 Aug 8 Missed Playoffs
Cincinnati Reds 5 Jul 1 Jul 5 Missed Playoffs
Cleveland Indians 5 May 2 May 6 Missed Playoffs
Colorado Rockies 5 Aug 16 Aug 21 Missed Playoffs
Colorado Rockies 5 Jun 14 Jun 18 Missed Playoffs
Colorado Rockies 5 Sep 12 Sep 18 Missed Playoffs
Kansas City Royals 5 May 30 Jun 4 Missed Playoffs
Kansas City Royals 5 Apr 21 Apr 26 Missed Playoffs
Los Angeles Dodgers 5 Apr 2 Apr 6 Lost NLCS
Milwaukee Brewers 5 Sep 7 Sep 12 Lost NLDS
Milwaukee Brewers 5 Jun 3 Jun 8 Lost NLDS
Milwaukee Brewers 5 May 27 May 31 Lost NLDS
Minnesota Twins 5 Jun 16 Jun 21 Missed Playoffs
New York Mets 5 May 25 May 31 Missed Playoffs
New York Mets 5 Apr 11 Apr 17 Missed Playoffs
New York Yankees 5 Aug 3 Aug 7 Lost ALWC
New York Yankees 5 Apr 30 May 5 Lost ALWC
Oakland Athletics 5 Sep 15 Sep 19 Missed Playoffs
Philadelphia Phillies 5 May 3 May 7 Missed Playoffs
Philadelphia Phillies 5 Sep 21 Sep 25 Missed Playoffs
San Francisco Giants 5 May 16 May 20 Lost NLDS
San Francisco Giants 5 Jun 20 Jun 26 Lost NLDS
San Francisco Giants 5 Jun 14 Jun 18 Lost NLDS
San Francisco Giants 5 Jul 7 Jul 16 Lost NLDS
San Francisco Giants 5 Aug 21 Aug 26 Lost NLDS
Seattle Mariners 5 Aug 31 Sep 5 Missed Playoffs
Seattle Mariners 5 Jun 17 Jun 22 Missed Playoffs
Seattle Mariners 5 May 27 May 31 Missed Playoffs
Tampa Bay Rays 5 Aug 4 Aug 10 Lost ALDS
Tampa Bay Rays 5 Apr 16 Apr 20 Lost ALDS
Tampa Bay Rays 5 Jul 20 Jul 24 Lost ALDS
Tampa Bay Rays 5 May 2 May 6 Lost ALDS
Tampa Bay Rays 5 May 26 May 31 Lost ALDS
Toronto Blue Jays 5 Aug 3 Aug 7 Missed Playoffs
Toronto Blue Jays 5 Jun 19 Jun 24 Missed Playoffs
Washington Nationals 5 Jun 13 Jun 18 Missed Playoffs
Washington Nationals 5 Jun 19 Jun 24 Missed Playoffs
Team Winning Streak Start End Result
1 St. Louis Cardinals 17 Sep 11 Sep 28 Lost NLWC
2 New York Yankees 13 Aug 14 Aug 27 Lost ALWC
Oakland Athletics 13 Apr 9 Apr 24 Missed Playoffs
4 Houston Astros 11 Jun 13 Jun 24 Lost WS
Milwaukee Brewers 11 Jun 22 Jul 3 Lost NLDS
Tampa Bay Rays 11 May 13 May 24 Lost ALDS
7 Atlanta Braves 9 Aug 13 Aug 22 Won WS
Boston Red Sox 9 Apr 5 Apr 14 Lost ALCS
Los Angeles Dodgers 9 Jun 25 Jul 4 Lost NLCS
Los Angeles Dodgers 9 Aug 13 Aug 21 Lost NLCS
San Diego Padres 9 May 14 May 23 Missed Playoffs
San Francisco Giants 9 Sep 5 Sep 14 Lost NLDS
Tampa Bay Rays 9 Aug 21 Aug 31 Lost ALDS
14 Boston Red Sox 8 Jun 25 Jul 2 Lost ALCS
Los Angeles Dodgers 8 May 17 May 25 Lost NLCS
Los Angeles Dodgers 8 Sep 26 Oct 6 Lost NLCS
Los Angeles Dodgers 8 Apr 9 Apr 17 Lost NLCS
Philadelphia Phillies 8 Aug 1 Aug 8 Missed Playoffs
San Diego Padres 8 Jun 17 Jun 25 Missed Playoffs
Toronto Blue Jays 8 Sep 1 Sep 9 Missed Playoffs
21 Boston Red Sox 7 Sep 14 Sep 22 Lost ALCS
Chicago Cubs 7 Aug 31 Sep 6 Missed Playoffs
Detroit Tigers 7 Jul 17 Jul 22 Missed Playoffs
New York Mets 7 May 5 May 12 Missed Playoffs
New York Yankees 7 Sep 20 Sep 28 Lost ALWC
Oakland Athletics 7 Aug 4 Aug 12 Missed Playoffs
Oakland Athletics 7 Jun 11 Jun 18 Missed Playoffs
San Francisco Giants 7 Sep 24 Oct 1 Lost NLDS
29 Atlanta Braves 6 Sep 24 Sep 30 Won WS
Chicago Cubs 6 May 23 May 29 Missed Playoffs
Chicago White Sox 6 May 7 May 13 Lost ALDS
Chicago White Sox 6 Sep 26 Oct 2 Lost ALDS
Cincinnati Reds 6 Apr 3 Apr 9 Missed Playoffs
Cincinnati Reds 6 Jun 11 Jun 16 Missed Playoffs
Houston Astros 6 May 11 May 16 Lost WS
Houston Astros 6 Jul 1 Jul 7 Lost WS
Kansas City Royals 6 Jul 20 Jul 26 Missed Playoffs
Los Angeles Angels 6 Jun 7 Jun 13 Missed Playoffs
Los Angeles Dodgers 6 Sep 10 Sep 15 Lost NLCS
New York Mets 6 Aug 28 Sep 4 Missed Playoffs
New York Yankees 6 May 18 May 23 Lost ALWC
Philadelphia Phillies 6 Aug 27 Sep 2 Missed Playoffs
San Francisco Giants 6 Aug 7 Aug 13 Lost NLDS
Seattle Mariners 6 Sep 19 Sep 24 Missed Playoffs
St. Louis Cardinals 6 Aug 10 Aug 15 Lost NLWC
St. Louis Cardinals 6 Apr 29 May 5 Lost NLWC
Tampa Bay Rays 6 Jul 4 Jul 10 Lost ALDS
48 Atlanta Braves 5 Oct 9 Oct 17 Won WS
Boston Red Sox 5 Jun 3 Jun 7 Lost ALCS
Chicago Cubs 5 Jun 8 Jun 13 Missed Playoffs
Chicago Cubs 5 May 4 May 8 Missed Playoffs
Chicago White Sox 5 Jul 6 Jul 11 Lost ALDS
Chicago White Sox 5 Jun 27 Jul 2 Lost ALDS
Chicago White Sox 5 May 27 May 31 Lost ALDS
Cincinnati Reds 5 Aug 4 Aug 8 Missed Playoffs
Cincinnati Reds 5 Jul 1 Jul 5 Missed Playoffs
Cleveland Indians 5 May 2 May 6 Missed Playoffs
Colorado Rockies 5 Aug 16 Aug 21 Missed Playoffs
Colorado Rockies 5 Jun 14 Jun 18 Missed Playoffs
Colorado Rockies 5 Sep 12 Sep 18 Missed Playoffs
Kansas City Royals 5 May 30 Jun 4 Missed Playoffs
Kansas City Royals 5 Apr 21 Apr 26 Missed Playoffs
Los Angeles Dodgers 5 Apr 2 Apr 6 Lost NLCS
Milwaukee Brewers 5 Sep 7 Sep 12 Lost NLDS
Milwaukee Brewers 5 Jun 3 Jun 8 Lost NLDS
Milwaukee Brewers 5 May 27 May 31 Lost NLDS
Minnesota Twins 5 Jun 16 Jun 21 Missed Playoffs
New York Mets 5 May 25 May 31 Missed Playoffs
New York Mets 5 Apr 11 Apr 17 Missed Playoffs
New York Yankees 5 Aug 3 Aug 7 Lost ALWC
New York Yankees 5 Apr 30 May 5 Lost ALWC
Oakland Athletics 5 Sep 15 Sep 19 Missed Playoffs
Philadelphia Phillies 5 May 3 May 7 Missed Playoffs
Philadelphia Phillies 5 Sep 21 Sep 25 Missed Playoffs
San Francisco Giants 5 May 16 May 20 Lost NLDS
San Francisco Giants 5 Jun 20 Jun 26 Lost NLDS
San Francisco Giants 5 Jun 14 Jun 18 Lost NLDS
San Francisco Giants 5 Jul 7 Jul 16 Lost NLDS
San Francisco Giants 5 Aug 21 Aug 26 Lost NLDS
Seattle Mariners 5 Aug 31 Sep 5 Missed Playoffs
Seattle Mariners 5 Jun 17 Jun 22 Missed Playoffs
Seattle Mariners 5 May 27 May 31 Missed Playoffs
Tampa Bay Rays 5 Aug 4 Aug 10 Lost ALDS
Tampa Bay Rays 5 Apr 16 Apr 20 Lost ALDS
Tampa Bay Rays 5 Jul 20 Jul 24 Lost ALDS
Tampa Bay Rays 5 May 2 May 6 Lost ALDS
Tampa Bay Rays 5 May 26 May 31 Lost ALDS
Toronto Blue Jays 5 Aug 3 Aug 7 Missed Playoffs
Toronto Blue Jays 5 Jun 19 Jun 24 Missed Playoffs
Washington Nationals 5 Jun 13 Jun 18 Missed Playoffs
Washington Nationals 5 Jun 19 Jun 24 Missed Playoffs

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