Category:2021 in baseball

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• Baseball teams disestablished in 2021‎ (1 C, 3 P)
• Baseball teams established in 2021‎ (20 P)

C

• 2021 college baseball season‎ (1 C, 2 P)
• Impact of the COVID-19 pandemic on baseball‎ (3 C, 16 P)

L

• 2021 Little League World Series‎ (2 P)

M

• 2021 Major League Baseball season‎ (45 P)

N

• 2021 Nippon Professional Baseball season‎ (12 P)

O

• Baseball at the 2020 Summer Olympics‎ (2 C, 2 P)

• 2021 in baseball

0–9

• 2020 U-23 Baseball World Cup
• 2020–21 Australian Baseball League season
• 2021 European Champions Cup (baseball)
• 2021 Honkbal Hoofdklasse season
• 2021 Women's Baseball World Cup
• 2021–22 Australian Baseball League season

A

• 2021 American Association season

C

• 2021 Caribbean Series
• 2021 Chinese Professional Baseball League season
• 2021 College World Series
• 2020–21 Cuban National Series

E

• 2021 European Baseball Championship

H

• 2021 Baseball Hall of Fame balloting

I

• Impact of the COVID-19 pandemic on baseball

J

• Baseball at the 2021 Junior Pan American Games

K

• 2021 KBO League season
• 2021 Korean Series

L

• 2021 Little League World Series

M

• 2021 Mexican League season
• 2021–22 Mexican Pacific League season

N

• 2021 Nippon Professional Baseball season

O

• Baseball at the 2020 Summer Olympics

P

• 2021 PGCBL season

Q

• 2021 Little League World Series qualification

U

• 2021 U-12 Baseball World Cup
• 2021 U-18 European Baseball Championship