Frank Duncan
1920–1945 · 25 seasons · Bats right, throws right · Born 1901
More than one Major Leaguer has this name. This page is the Frank Duncan who played 1920–1945. The other one:
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Hitting
| Season | Team | Lg | G | PA | AB | R | H | 2B | 3B | HR | RBI | BB | SO | SB | AVG | OBP | SLG | OPS | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1920 | Chicago Giants | NEG | 16 | 58 | 47 | 3 | 7 | 1 | 0 | 0 | 3 | 6 | 0 | 0 | .149 | .259 | .170 | .429 | -0.1 |
| 1921 | Kansas City Monarchs | NEG | 81 | 276 | 249 | 26 | 62 | 7 | 0 | 0 | 22 | 10 | 1 | 5 | .249 | .292 | .277 | .569 | 0.3 |
| 1922 | Kansas City Monarchs | NEG | 75 | 320 | 267 | 45 | 62 | 14 | 2 | 1 | 23 | 28 | 3 | 4 | .232 | .310 | .311 | .621 | 0.6 |
| 1923 | Kansas City Monarchs | NEG | 91 | 409 | 346 | 60 | 89 | 18 | 4 | 0 | 39 | 38 | 0 | 13 | .257 | .332 | .332 | .665 | 1.7 |
| 1924 | Kansas City Monarchs | NEG | 68 | 281 | 235 | 51 | 62 | 11 | 2 | 0 | 34 | 27 | 4 | 7 | .264 | .350 | .328 | .677 | 1.3 |
| 1925 | Kansas City Monarchs | NEG | 51 | 173 | 146 | 22 | 34 | 3 | 0 | 1 | 13 | 22 | 0 | 2 | .233 | .333 | .274 | .607 | -0.3 |
| 1926 | Kansas City Monarchs | NEG | 57 | 202 | 166 | 32 | 47 | 9 | 1 | 4 | 22 | 25 | 2 | 3 | .283 | .383 | .422 | .805 | 1.5 |
| 1927 | Kansas City Monarchs | NEG | 20 | 63 | 56 | 10 | 22 | 2 | 3 | 0 | 9 | 5 | 0 | 1 | .393 | .443 | .536 | .978 | 0.8 |
| 1928 | Kansas City Monarchs | NEG | 49 | 181 | 150 | 18 | 41 | 8 | 1 | 3 | 23 | 19 | 0 | 3 | .273 | .363 | .400 | .763 | 1.2 |
| 1929 | Kansas City Monarchs | NEG | 45 | 168 | 140 | 27 | 48 | 6 | 4 | 1 | 37 | 19 | 0 | 7 | .343 | .432 | .464 | .896 | 1.4 |
| 1930 | Kansas City Monarchs | NEG | 53 | 191 | 162 | 33 | 58 | 9 | 4 | 1 | 27 | 21 | 3 | 2 | .358 | .435 | .481 | .916 | 1.4 |
| 1931 | Kansas City Monarchs | IND | 22 | 79 | 69 | 11 | 17 | 2 | 0 | 0 | 3 | 8 | 3 | 5 | .246 | .325 | .275 | .600 | 0.1 |
| 1932 | Pittsburgh Crawfords | IND | 37 | 122 | 103 | 10 | 23 | 1 | 3 | 0 | 11 | 11 | 1 | 1 | .223 | .298 | .291 | .590 | -0.2 |
| 1933 | Kansas City Monarchs | IND | 4 | 14 | 13 | 4 | 4 | 1 | 2 | 0 | 5 | 1 | 0 | 1 | .308 | .357 | .692 | 1.049 | 0.2 |
| 1934 | Kansas City Monarchs | IND | 4 | 9 | 8 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | .125 | .222 | .125 | .347 | -0.1 |
| 1935 | New York Cubans | NEG | 35 | 127 | 109 | 10 | 22 | 5 | 0 | 0 | 16 | 12 | 2 | 0 | .202 | .287 | .248 | .535 | -0.2 |
| 1936 | New York Cubans | NEG | 40 | 150 | 130 | 16 | 30 | 2 | 1 | 1 | 12 | 12 | 1 | 0 | .231 | .296 | .285 | .580 | -0.1 |
| 1937 | Kansas City Monarchs | NEG | 51 | 184 | 154 | 22 | 35 | 8 | 1 | 0 | 22 | 18 | 5 | 2 | .227 | .324 | .292 | .616 | 0.3 |
| 1938 | Kansas City Monarchs | NEG | 34 | 129 | 106 | 19 | 27 | 4 | 1 | 2 | 14 | 16 | 0 | 3 | .255 | .363 | .368 | .731 | 0.8 |
| 1940 | Chicago American Giants | NEG | 1 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | .000 | .333 | .000 | .333 | 0.0 |
| 1941 | Kansas City Monarchs | NEG | 15 | 46 | 41 | 3 | 10 | 0 | 1 | 0 | 4 | 4 | 0 | 1 | .244 | .311 | .293 | .604 | 0.1 |
| 1942 | Kansas City Monarchs | NEG | 12 | 27 | 25 | 0 | 3 | 2 | 0 | 0 | 3 | 1 | 0 | 0 | .120 | .154 | .200 | .354 | -0.2 |
| 1943 | Kansas City Monarchs | NEG | 19 | 54 | 43 | 5 | 6 | 0 | 0 | 0 | 2 | 9 | 1 | 2 | .140 | .288 | .140 | .428 | -0.1 |
| 1944 | Kansas City Monarchs | NEG | 20 | 52 | 37 | 2 | 8 | 4 | 0 | 0 | 5 | 9 | 0 | 1 | .216 | .396 | .324 | .720 | 0.5 |
| 1945 | Kansas City Monarchs | NEG | 15 | 42 | 34 | 2 | 6 | 2 | 0 | 0 | 3 | 8 | 0 | 1 | .176 | .333 | .235 | .569 | 0.1 |
| Subtotal | Negro Leagues · 21 seasons | 848 | 3136 | 2645 | 406 | 679 | 115 | 25 | 14 | 333 | 310 | 22 | 58 | .257 | .341 | .335 | .676 | 11.1 | |
| Subtotal | Independent Black clubs · 4 seasons | 67 | 224 | 193 | 26 | 45 | 4 | 5 | 0 | 19 | 21 | 4 | 7 | .233 | .308 | .306 | .614 | 0.0 | |
| Career | 25 seasons | 915 | 3360 | 2838 | 432 | 724 | 119 | 30 | 14 | 352 | 331 | 26 | 65 | .255 | .339 | .333 | .672 | 11.0 | |
These seasons were much shorter. In 1937 a Negro Leagues team played about 51 official games while an American or National League team played about 155. The totals above add those seasons up exactly as they were played — no conversion, no pro-rating, no adjustment of any kind — which is why the league subtotals are there. Rate statistics like batting average and ERA do not depend on how many games were played, so they compare straight across the table.
Gold shading marks a top-five finish in that league that season. Filled for first, shaded for second and third, faint for fourth and fifth, with the exact place in the corner of the cell. These rankings are ours, not part of the source data: we work them out from the season lines on this site and count each league on its own, so a first in the American League is not a first across baseball. Rate statistics use the same qualifying line as the season tool, which is why a relief pitcher can have the lowest ERA in his league and still have no shading on it — he did not pitch enough innings to qualify. A ranking is only drawn when its column is on screen; press Show all columns for the rest.
The dark chips beside a season are awards. Those are records rather than our arithmetic: MVP (Most Valuable Player), CY (Cy Young Award), ROY (Rookie of the Year), GG (Gold Glove), SS (Silver Slugger). Two of them are lettered in the metal they are named after — Gold Glove in gold, Silver Slugger in silver — but the letters say which is which, so nothing here depends on telling the two apart by colour.
Any shaded cell or chip will explain itself. Point at one, or tab to it and it opens on focus, and it names the league, the season and the statistic in full. On a touchscreen, tap it once to open and once more to close.
Not every award existed yet. This database has Rookie of the Year from 1947, Cy Young Award from 1956, Gold Glove from 1957, Silver Slugger from 1980. A season before that is a season the award did not exist, not a season this player missed out on. The Negro Leagues had none of these awards, so a blank season there says nothing about how the player played.
The WAR columns are worked out on this site — they are not part of the source data, and they will not match Baseball-Reference exactly.
Everything else on this page comes straight from the Lahman database. WAR is our own calculation from those same season lines: fielding is estimated from putouts and assists rather than measured, fielding innings are missing before 1954, and the fielding component is capped. Treat it as a reasonable estimate of value, not as a record. The season tool explains the method in full.
— means the value is not in the source for that season, which is not the same as zero. In the Career and Subtotal rows it marks a statistic that cannot be added up across seasons — wOBA and FIP both need league constants that change every year, so we leave them blank rather than invent one. Leagues on this page: NEG (Negro Leagues), IND (Independent Black clubs).
Data for 1871 to 2025: Lahman Baseball Database 2025, compiled by SABR (Society for American Baseball Research) and licensed under CC BY-SA 3.0 Unported. Negro Leagues data licensed from Seamheads.com and included under SABR major-league recommendations (2021-02-11, 2024-06-03). The season lines on this page are our own derivative of that database — the WAR columns are computed here — and they are published under the same CC BY-SA 3.0 Unported licence, as ShareAlike requires. That database is published once a season is complete, so the 2026 figures on this site come from a different place: the MLB Stats API, whose notice reads “Copyright 2026 MLB Advanced Media, L.P. Use of any content on this page acknowledges agreement to the terms posted here http://gdx.mlb.com/components/copyright.txt”. Those numbers are MLB Advanced Media, L.P.’s, not SABR (Society for American Baseball Research)’s, and they carry that notice rather than the CC BY-SA 3.0 Unported licence above. Not affiliated with, endorsed by, or connected to Major League Baseball or any of its clubs.