12 teams are tied for losing the most games with a run differential of 1 or above in a season, with 1 loss. The first three are the Washington Senators in 1971, the New York Giants in 1942 and in 1899 and the Washington Senators in 1941.
| TEAM | L | DIFF | SEASON | W | L% | G | W% | AB | R | H | 2B | 3B | HR | RBI | BB | HBP | SO | SB | CS | PA | TB | XBH | SH | SF | IBB | GIDP | AVG | OBP | SLG | OPS | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Senators | 1 | 186 | 1971 | 63 | .016 | 64 | .984 | 2,189 | 348 | 606 | 101 | 21 | 43 | 322 | 287 | 10 | 376 | 39 | 26 | 2,541 | 878 | 165 | 34 | 21 | 47 | 50 | .277 | .360 | .401 | .761 |
| 2 |  | Giants | 1 | 284 | 1942 | 85 | .012 | 86 | .988 | 2,900 | 490 | 816 | 107 | 26 | 75 | 462 | 349 | 15 | 242 | 24 | 3,326 | 1,200 | 208 | 62 | 81 | .281 | .362 | .414 | .775 | |||
| 3 |  | Senators | 1 | 219 | 1941 | 70 | .014 | 71 | .986 | 2,594 | 442 | 807 | 156 | 48 | 20 | 404 | 232 | 5 | 195 | 54 | 2,874 | 1,119 | 224 | 43 | 47 | .311 | .369 | .431 | .800 | |||
| 4 |  | Cubs | 1 | 327 | 1907 | 107 | .009 | 108 | .991 | 3,420 | 492 | 925 | 118 | 41 | 12 | 345 | 34 | 186 | 3,960 | 1,161 | 171 | 161 | .270 | .343 | .339 | .683 | ||||||
| 5 | | Giants | 1 | 233 | 1899 | 60 | .016 | 62 | .984 | 447 | ||||||||||||||||||||||
| 6 |  | Pirates | 1 | 182 | 1897 | 60 | .016 | 61 | .984 | 404 | ||||||||||||||||||||||
| 7 |  | Phillies | 1 | 214 | 1897 | 54 | .018 | 55 | .982 | 442 | ||||||||||||||||||||||
| 8 |  | Senators | 1 | 190 | 1894 | 45 | .022 | 46 | .978 | 415 | ||||||||||||||||||||||
| 9 |  | Orioles | 1 | 228 | 1892 | 46 | .021 | 47 | .979 | 410 | ||||||||||||||||||||||
| 10 |  | Colts | 1 | 229 | 1892 | 70 | .014 | 71 | .986 | 457 | ||||||||||||||||||||||
| 11 | | Orioles | 1 | 322 | 1891 | 71 | .014 | 72 | .986 | 581 | ||||||||||||||||||||||
| 12 | Gladiators | 1 | 80 | 1890 | 26 | .037 | 27 | .963 | 223 | |||||||||||||||||||||||
| 13 | Spiders | 1 | 153 | 1887 | 39 | .025 | 40 | .975 | 316 | |||||||||||||||||||||||
| 14 | Cowboys | 1 | 54 | 1884 | 16 | .059 | 17 | .941 | 103 | |||||||||||||||||||||||
| 15 | Grays | 1 | 323 | 1883 | 58 | .017 | 59 | .983 | 517 |
Some of the information used here was obtained free of charge from Retrosheet.
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| NL East | W | L | PCT | GB |
|---|---|---|---|---|
 Braves - y | 94 | 68 | .580 | |
 Phillies - w | 88 | 74 | .543 | 6.0 |
80 | 82 | .494 | 14.0 | |
77 | 85 | .475 | 17.0 | |
74 | 88 | .457 | 20.0 | |
| NL Central | W | L | PCT | GB |
 Brewers - y | 103 | 59 | .636 | |
 Cubs - w | 89 | 73 | .549 | 14.0 |
82 | 80 | .506 | 21.0 | |
77 | 85 | .475 | 26.0 | |
75 | 87 | .463 | 28.0 | |
| NL West | W | L | PCT | GB |
 Dodgers - y | 100 | 62 | .617 | |
 Padres - w | 91 | 71 | .562 | 9.0 |
86 | 76 | .531 | 14.0 | |
65 | 97 | .401 | 35.0 | |
58 | 104 | .358 | 42.0 |
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Nationals
Mets
Pirates
Cardinals
Reds
Diamondbacks
Giants
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|---|---|---|---|---|
 Rays - y | 98 | 64 | .605 | |
 Yankees - w | 93 | 68 | .578 | 4.5 |
 Red Sox - w | 87 | 75 | .537 | 11.0 |
79 | 82 | .491 | 18.5 | |
79 | 83 | .488 | 19.0 | |
| AL Central | W | L | PCT | GB |
 Guardians - y | 85 | 77 | .525 | |
 White Sox - w | 84 | 78 | .519 | 1.0 |
77 | 85 | .475 | 8.0 | |
76 | 86 | .469 | 9.0 | |
69 | 93 | .426 | 16.0 | |
| AL West | W | L | PCT | GB |
 Astros - y | 81 | 81 | .500 | |
80 | 82 | .494 | 1.0 | |
76 | 86 | .469 | 5.0 | |
64 | 98 | .395 | 17.0 | |
62 | 100 | .383 | 19.0 |
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