Since 2020, 15 teams are tied for the most wins in their first game, with 1 win. The first three are the Chicago Cubs, the Cincinnati Reds and the St. Louis Cardinals.
| TEAM | W | L | W% | G | AB | R | H | 2B | 3B | HR | RBI | BB | HBP | SO | SB | CS | PA | TB | XBH | SH | SF | IBB | GIDP | AVG | OBP | SLG | OPS | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Cubs | 1 | 0 | 1.000 | 1 | 28 | 3 | 5 | 1 | 0 | 2 | 3 | 1 | 1 | 7 | 0 | 0 | 30 | 12 | 3 | 0 | 0 | 0 | 2 | .179 | .233 | .429 | .662 |
| 2 |  | Reds | 1 | 0 | 1.000 | 1 | 31 | 7 | 9 | 1 | 0 | 2 | 7 | 4 | 2 | 4 | 1 | 0 | 37 | 16 | 3 | 0 | 0 | 0 | 1 | .290 | .405 | .516 | .922 |
| 3 |  | Cardinals | 1 | 0 | 1.000 | 1 | 31 | 5 | 9 | 0 | 1 | 3 | 5 | 3 | 0 | 9 | 0 | 1 | 34 | 20 | 4 | 0 | 0 | 0 | 0 | .290 | .353 | .645 | .998 |
| 4 |  | Red Sox | 1 | 0 | 1.000 | 1 | 40 | 13 | 17 | 8 | 0 | 0 | 13 | 7 | 0 | 9 | 0 | 0 | 47 | 25 | 8 | 0 | 0 | 0 | 0 | .425 | .511 | .625 | 1.136 |
| 5 |  | Indians | 1 | 0 | 1.000 | 1 | 28 | 2 | 5 | 2 | 0 | 0 | 2 | 3 | 2 | 3 | 0 | 0 | 33 | 7 | 2 | 0 | 0 | 0 | 1 | .179 | .303 | .250 | .553 |
| 6 |  | Athletics | 1 | 0 | 1.000 | 1 | 33 | 7 | 7 | 1 | 1 | 2 | 7 | 7 | 1 | 11 | 0 | 0 | 41 | 16 | 4 | 0 | 0 | 0 | 1 | .212 | .366 | .485 | .851 |
| 7 |  | Twins | 1 | 0 | 1.000 | 1 | 37 | 10 | 11 | 0 | 0 | 2 | 10 | 5 | 0 | 9 | 0 | 0 | 43 | 17 | 2 | 0 | 1 | 0 | 0 | .297 | .372 | .459 | .832 |
| 8 |  | Rangers | 1 | 0 | 1.000 | 1 | 28 | 1 | 3 | 2 | 1 | 0 | 1 | 3 | 0 | 6 | 0 | 0 | 31 | 7 | 3 | 0 | 0 | 0 | 0 | .107 | .194 | .250 | .444 |
| 9 |  | Astros | 1 | 0 | 1.000 | 1 | 35 | 8 | 10 | 3 | 0 | 1 | 8 | 4 | 0 | 5 | 0 | 0 | 39 | 16 | 4 | 0 | 0 | 0 | 0 | .286 | .359 | .457 | .816 |
| 10 |  | Mets | 1 | 0 | 1.000 | 1 | 28 | 1 | 6 | 1 | 0 | 1 | 1 | 0 | 1 | 4 | 0 | 0 | 29 | 10 | 2 | 0 | 0 | 0 | 1 | .214 | .241 | .357 | .599 |
| 11 |  | Padres | 1 | 0 | 1.000 | 1 | 30 | 7 | 8 | 3 | 0 | 0 | 7 | 7 | 0 | 8 | 2 | 0 | 37 | 11 | 3 | 0 | 0 | 0 | 2 | .267 | .405 | .367 | .772 |
| 12 |  | Blue Jays | 1 | 0 | 1.000 | 1 | 34 | 6 | 9 | 2 | 0 | 1 | 6 | 3 | 0 | 11 | 0 | 0 | 39 | 14 | 3 | 0 | 2 | 0 | 0 | .265 | .308 | .412 | .719 |
| 13 |  | Marlins | 1 | 0 | 1.000 | 1 | 34 | 5 | 9 | 2 | 0 | 1 | 4 | 3 | 0 | 9 | 1 | 1 | 38 | 14 | 3 | 0 | 1 | 0 | 0 | .265 | .316 | .412 | .728 |
| 14 |  | Dodgers | 1 | 0 | 1.000 | 1 | 37 | 8 | 12 | 4 | 0 | 1 | 8 | 5 | 1 | 6 | 0 | 0 | 43 | 19 | 5 | 0 | 0 | 0 | 1 | .324 | .419 | .514 | .932 |
| 15 |  | Yankees | 1 | 0 | 1.000 | 1 | 22 | 4 | 6 | 1 | 0 | 1 | 4 | 4 | 0 | 11 | 0 | 0 | 26 | 10 | 2 | 0 | 0 | 0 | 0 | .273 | .385 | .455 | .839 |
Some of the information used here was obtained free of charge from Retrosheet.
Cubs 
Cardinals 
Brewers 
Reds 
Pirates 
CWS 
MIA 
Yankees 
Blue Jays 
Tigers 
Guardians 
Mariners 
Astros 
Mets 
Phillies 
Dodgers 
Padres 
SFG 
LAA 
BAL 
TBR 
TEX 
ATH 
