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Fielding Effects


All raw data supplied courtesy of Baseball-Reference.com.
They do a wonderful job, and deserve your support.

Fielding Effects

Through games of Tuesday, 1 September 2026.
All results are from true, unadjusted data.

The Table shows two lines for each team. The first is their actual stats to date, from Games through Strikeouts; the stats FEbat and FErun—Fielding Efficiency on batters and Fielding Efficiency on runners—are explained on our page here about Team Defense. The OR stat on this line is the TPP-projected Runs the team would be expected to have yielded to date (for an explanation of the TPP, see our page here about basic Baseball Analysis). The R stat is the TOP-projected team Runs scored to date. The Δ stats are immaterial for this line.

The second Table line for each team is their calculated stats if their defense were MLB-average. The FEbat and FErun values on this line are their MLB-average values (averaged over the three recent years 2017 - 2019). The OR stat on this line is the TPP-projected Runs the team would be expected to have yielded to date based on the average-fielding stat values. And on this line, the Δ stats show the differences in Wins that having an MLB-average defense would gain or lose (the ΔW stat is for the year to date, while the ΔWyr is for a full 162-game season.

Thus, this table shows us what a given team’s defense is doing to help or hurt it. As you see, the average difference is less than 3 wins a season, and that figure is heavily weighted by a very few very bad defenses. (Without the three exceptionally worst, the average difference is just 2 wins a year, and the widest swings from assuming an MLB-average defense are 6 lost by good-fielding teams and gained by poor-fielding teams, with 2/3 of the teams within a couple of wins of average-fielding results.

(Those interested in the tiresome details of the calculations can follow that link to a full explanation.)

We cannot easily disentangle pitching from fielding, because fielding affects pitching results. But, painting with a very broad brush, we can say that at the extremes the fielding-attributable difference in runs allowed is in the range of being equivalent to perhaps a quarter to a third of a run on the team ERA, with the more normal variations amounting to about an eighth of a run. Pretty clearly, on a team level, fielding runs a poor second to pitching in significance for runs allowed, and thus a very poor third to offense. (Recall that offense and defense are each 50% of the game, and defense is part pitching and part fielding.) Since the extremes of team ERA cover about 2.75 runs (in 2020, 3.02 to 5.75) while the extremes of fielding, even including all the outliers, equate to maybe 0.60 on an ERA, their ratio is—and again, this is very, very broad-brush thinking—around 9:2, making fielding perhaps at most around 20% of defense and thus pitching about 80%, meaning that offense is 50% of the game, pitching is 40%, and fielding is at most around 10%, and so of much less importance than either offense or pitching. (Quite as we said almost 40 years ago.)

— Place your cursor over any column heading to see what it signifies. —

Team G IP BFP AB BB HBP SH SF CI H 2B 3B HR SO FEbat FErun OR R       ΔW ΔWyr
Rays,
with actual fielding		 138 1233.0 5081 4623 345 50 18 43 2 1064 206 14 172 1133 73.60% 7.74% 542 621 --- ---
Rays,
assuming average fielding		 138 1233.0 5026 4573 341 49 18 43 2 1053 204 14 170 1121 71.26% 8.14% 560 621 -2 -2
Dodgers,
with actual fielding		 138 1220.2 5063 4533 428 59 19 24 0 989 200 12 156 1259 73.65% 6.91% 510 661 --- ---
Dodgers,
assuming average fielding		 138 1220.2 5009 4484 423 58 19 24 0 978 198 12 154 1245 71.26% 8.14% 528 661 -2 -2
Cubs,
with actual fielding		 139 1242.2 5207 4695 417 54 17 23 1 1149 164 10 211 1073 72.82% 9.60% 604 749 --- ---
Cubs,
assuming average fielding		 139 1242.2 5151 4644 413 53 17 23 1 1137 162 10 209 1061 71.26% 8.14% 624 749 -2 -2
Brewers,
with actual fielding		 139 1242.2 5138 4605 440 56 16 21 0 1020 185 13 146 1331 72.39% 9.21% 505 669 --- ---
Brewers,
assuming average fielding		 139 1242.2 5083 4555 435 55 16 21 0 1009 183 13 144 1317 71.26% 8.14% 507 669 0 -1
Marlins,
with actual fielding		 139 1220.2 5161 4579 467 69 12 31 3 1057 196 21 137 1131 72.57% 8.04% 556 625 --- ---
Marlins,
assuming average fielding		 139 1220.2 5105 4530 462 68 12 31 3 1046 194 21 136 1119 71.26% 8.14% 560 625 0 -1
Tigers,
with actual fielding		 138 1219.1 5123 4572 435 61 27 28 0 1068 210 19 143 1110 72.58% 8.32% 544 595 --- ---
Tigers,
assuming average fielding		 138 1219.1 5068 4523 430 60 27 28 0 1057 208 19 141 1098 71.26% 8.14% 550 595 -1 -1
Team G IP BFP AB BB HBP SH SF CI H 2B 3B HR SO FEbat FErun OR R       ΔW ΔWyr
Diamondbacks,
with actual fielding		 140 1242.0 5266 4723 421 55 21 42 4 1182 235 27 160 954 72.17% 8.71% 612 606 --- ---
Diamondbacks,
assuming average fielding		 140 1242.0 5209 4672 416 54 21 42 4 1169 232 27 158 944 71.26% 8.14% 617 606 0 0
Braves,
with actual fielding		 139 1234.0 5196 4616 471 51 20 35 3 1077 176 19 152 1181 72.29% 8.12% 560 619 --- ---
Braves,
assuming average fielding		 139 1234.0 5140 4566 466 50 20 35 3 1065 174 19 150 1168 71.26% 8.14% 564 619 -1 0
Yankees,
with actual fielding		 139 1241.2 5157 4626 421 54 16 33 7 1043 199 20 135 1243 72.46% 8.03% 514 608 --- ---
Yankees,
assuming average fielding		 139 1241.2 5101 4576 416 53 16 33 7 1032 197 20 134 1230 71.26% 8.14% 517 608 0 0
Padres,
with actual fielding		 139 1230.1 5198 4620 473 58 15 29 3 1115 197 16 152 1124 71.58% 9.44% 571 580 --- ---
Padres,
assuming average fielding		 139 1230.1 5142 4570 468 57 15 29 3 1103 195 16 150 1112 71.26% 8.14% 572 580 -1 0
White Sox,
with actual fielding		 138 1231.0 5276 4625 502 79 26 39 5 1111 213 20 157 1157 71.74% 8.23% 611 622 --- ---
White Sox,
assuming average fielding		 138 1231.0 5219 4575 497 78 26 39 5 1099 211 20 155 1145 71.26% 8.14% 606 622 +1 +1
Astros,
with actual fielding		 139 1233.1 5339 4631 576 81 21 30 0 1109 186 21 180 1219 71.70% 8.33% 647 615 --- ---
Astros,
assuming average fielding		 139 1233.1 5282 4581 570 80 21 30 0 1097 184 21 178 1206 71.26% 8.14% 644 615 +1 +1
Royals,
with actual fielding		 139 1221.1 5258 4654 504 54 15 31 0 1196 251 21 170 1009 70.86% 10.35% 646 596 --- ---
Royals,
assuming average fielding		 139 1221.1 5201 4604 499 53 15 31 0 1183 248 21 168 998 71.26% 8.14% 634 596 +2 +1
Team G IP BFP AB BB HBP SH SF CI H 2B 3B HR SO FEbat FErun OR R       ΔW ΔWyr
Blue Jays,
with actual fielding		 139 1236.1 5252 4634 512 34 27 42 3 1102 184 9 144 1214 71.36% 8.15% 576 550 --- ---
Blue Jays,
assuming average fielding		 139 1236.1 5195 4584 506 34 27 42 3 1090 182 9 142 1201 71.26% 8.14% 563 550 +1 +1
Red Sox,
with actual fielding		 139 1236.1 5191 4671 402 55 23 39 1 1130 214 9 138 1187 70.89% 8.24% 554 621 --- ---
Red Sox,
assuming average fielding		 139 1236.1 5135 4621 398 54 23 39 1 1118 212 9 137 1174 71.26% 8.14% 537 621 +2 +2
Guardians,
with actual fielding		 138 1224.2 5167 4601 451 58 19 38 0 1083 212 15 154 1288 71.11% 7.78% 568 572 --- ---
Guardians,
assuming average fielding		 138 1224.2 5111 4551 446 57 19 38 0 1071 210 15 152 1274 71.26% 8.14% 553 572 +2 +2
Mets,
with actual fielding		 139 1237.2 5308 4691 492 70 23 31 1 1120 229 21 152 1238 71.15% 7.54% 605 570 --- ---
Mets,
assuming average fielding		 139 1237.2 5251 4641 487 69 23 31 1 1108 227 21 150 1225 71.26% 8.14% 582 570 +2 +2
Nationals,
with actual fielding		 141 1253.0 5462 4805 511 73 22 48 3 1226 221 11 192 1098 71.16% 800% 702 698 --- ---
Nationals,
assuming average fielding		 141 1253.0 5403 4753 506 72 22 47 3 1171 211 11 190 1086 71.26% 8.14% 680 698 +2 +2
Reds,
with actual fielding		 139 1233.0 5441 4732 563 72 19 46 9 1194 215 26 179 1119 70.99% 6.89% 713 592 --- ---
Reds,
assuming average fielding		 139 1233.0 5382 4681 557 71 19 46 9 1181 213 26 177 1107 71.26% 8.14% 687 592 +2 +3
Angels,
with actual fielding		 139 1228.0 5312 4614 568 70 13 44 3 1087 192 17 146 1243 71.33% 7.55% 610 544 --- ---
Angels,
assuming average fielding		 139 1228.0 5255 4564 562 69 13 44 3 1075 190 17 144 1230 71.26% 8.14% 593 544 +2 +3
Team G IP BFP AB BB HBP SH SF CI H 2B 3B HR SO FEbat FErun OR R       ΔW ΔWyr
Mariners,
with actual fielding		 139 1226.1 5158 4669 366 60 23 38 2 1166 224 13 165 1173 70.49% 8.82% 588 564 --- ---
Mariners,
assuming average fielding		 139 1226.1 5102 4619 362 59 23 38 2 1153 222 13 163 1160 71.26% 8.14% 565 564 +2 +3
Giants,
with actual fielding		 139 1225.0 5284 4642 511 61 23 44 3 1158 201 29 130 1049 70.88% 9.25% 619 593 --- ---
Giants,
assuming average fielding		 139 1225.0 5227 4592 506 60 23 44 3 1146 199 29 129 1038 71.26% 8.14% 596 593 +2 +3
Orioles,
with actual fielding		 139 1236.2 5304 4738 460 40 14 50 2 1205 237 24 147 1103 70.21% 8.86% 632 598 --- ---
Orioles,
assuming average fielding		 139 1236.2 5247 4687 455 40 14 49 2 1192 234 24 145 1091 71.26% 8.14% 596 598 +4 +4
Twins,
with actual fielding		 139 1224.2 5333 4701 501 59 25 43 4 1182 243 18 157 1150 70.39% 6.38% 655 633 --- ---
Twins,
assuming average fielding		 139 1224.2 5276 4650 496 58 25 43 4 1169 240 18 155 1138 71.26% 8.14% 622 633 +4 +4
Pirates,
with actual fielding		 139 1240.1 5340 4704 513 74 14 31 4 1123 250 14 137 1278 70.43% 7.75% 603 669 --- ---
Pirates,
assuming average fielding		 139 1240.1 5283 4653 507 73 14 31 4 1111 247 14 136 1264 71.26% 8.14% 568 669 +4 +4
Cardinals,
with actual fielding		 139 1239.0 5304 4713 470 62 13 42 4 1195 245 11 138 1092 70.12% 9.57% 611 598 --- ---
Cardinals,
assuming average fielding		 139 1239.0 5247 4662 465 61 13 42 4 1182 242 11 137 1080 71.26% 8.14% 584 598 +3 +4
Rangers,
with actual fielding		 139 1216.1 5217 4690 423 55 15 30 4 1168 220 22 164 1176 70.43% 6.33% 615 585 --- ---
Rangers,
assuming average fielding		 139 1216.1 5161 4640 418 54 15 30 4 1155 218 22 162 1163 71.26% 8.14% 585 585 +4 +4
Team G IP BFP AB BB HBP SH SF CI H 2B 3B HR SO FEbat FErun OR R       ΔW ΔWyr
Athletics,
with actual fielding		 139 1229.0 5488 4795 552 66 16 56 3 1292 259 22 209 1168 68.97% 7.36% 783 602 --- ---
Athletics,
assuming average fielding		 139 1229.0 5429 4743 546 65 16 55 3 1278 256 22 207 1155 71.26% 8.14% 721 602 +5 +6
Phillies,
with actual fielding		 139 1234.2 5265 4728 423 62 19 32 1 1166 190 23 162 1366 69.12% 7.19% 607 616 --- ---
Phillies,
assuming average fielding		 139 1234.2 5208 4677 418 61 19 32 1 1153 188 23 160 1351 71.26% 8.14% 557 616 +6 +7
Rockies,
with actual fielding		 139 1220.2 5460 4856 459 54 25 64 2 1394 309 45 188 944 68.37% 7.42% 814 639 --- ---
Rockies,
assuming average fielding		 139 1220.2 5401 4804 454 53 25 63 2 1379 306 45 186 934 71.26% 8.14% 733 639 +7 +8

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This page was last modified on Wednesday, 2 September 2026, at 2:48 pm Pacific Time.