The temporary rule changes for the 2020 season would continue in the 2021 regular season: A runner will be placed on second base at the start of every half-inning of any game that goes into extra innings. Doubleheaders will be played as two seven-inning games.
Wild Card
LDS
LCS
World Series
NYY 2
BOS 6
STL 1
LA 3
TB 1
BOS 3
CHI 1
HOU 3
SF 2
LA 3
ATL 3
MIL 1
HOU 4
BOS 2
ATL 4
LA 2
Houston Astros - 2021 MLB Playoffs Logo
ATL 4
HOU 2
Champ
ATL
2021 MLB Champion Atlanta Braves
z: best record, c: conference winner, y: division winner, w: wildcard, x: clinched playoff spot

ALDS

Best of 5-game series
Date    OpponentResultScoreSeries
10/7vs Chi. White SoxW  6-1 1-0
10/8vs Chi. White SoxW  9-4 2-0
10/10at Chi. White SoxL  6-12 2-1
10/12at Chi. White SoxW  10-1 3-1

ALCS

Best of 7-game series
Date    OpponentResultScoreSeries
10/15vs BostonW  5-4 1-0
10/16vs BostonL  5-9 1-1
10/18at BostonL  3-12 1-2
10/19at BostonW  9-2 2-2
10/20at BostonW  9-1 3-2
10/22vs BostonW  5-0 4-2

World Series

Best of 7-game series
Date    OpponentResultScoreSeries
10/26vs AtlantaL  2-6 0-1
10/27vs AtlantaW  7-2 1-1
10/29at AtlantaL  0-2 1-2
10/30at AtlantaL  2-3 1-3
10/31at AtlantaW  9-5 2-3
11/2vs AtlantaL  0-7 2-4