Willie KO Brennan boxer
- bouts
- 57
- won
- 47
- lost
- 5
- draw
- 5
- Status
- inactive
- Division
- middleweight
- Debut
- 1905-08-28
- Height
- 5′ 5½″/166cm
- Reach
- 72″/183cm
- Age
- 86
- Born
- 1888-02-04
- Death
- 1975-00-00
- Nationality
- USA
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1922-05-22 | Johnny Paske | LLLWLL | Broadway Auditorium, Buffalo | WIN Points |
| 1922-05-12 | Johnny Paske | LLLLWL | Broadway Auditorium, Buffalo | WIN Points |
| 1922-04-18 | Dick Humphries | debut | Cleveland | WIN |
| 1922-01-02 | Frankie Schoell | WWWWWW | Broadway Auditorium, Buffalo | LOST Points |
| 1921-10-03 | Stanley Meyers | WLLLLW | Broadway Auditorium, Buffalo | WIN Points |
| 1921-04-25 | Johnny Paske | LDWDLL | Broadway Auditorium, Buffalo | WIN Majority decision |
| 1921-01-28 | Steve Choynski | LWLLWL | Broadway Auditorium, Buffalo | WIN Points |
| 1920-11-25 | Ted Block | LWLWWW | Broadway Auditorium, Buffalo | WIN Technical knockout |
| 1920-10-29 | Young Fisher | LWLLLW | Arena, Syracuse | WIN Points |
| 1920-10-18 | Jack Loney | WDWLWL | Queen St. Arena, Niagara Falls | WIN Technical knockout |
| 1920-04-26 | Jack Loney | WWDWLW | Broadway Auditorium, Buffalo | WIN KO |
| 1920-04-19 | Steve Choynski | WWLWLW | Broadway Auditorium, Buffalo | WIN |
| 1920-04-06 | Lockport Jimmy Duffy | WLWLWD | Broadway Auditorium, Buffalo | WIN |
| 1920-03-22 | Kid Manuel | WWLWWL | Broadway Auditorium, Buffalo | WIN |
| 1920-03-17 | Jack Smith | WLLWWD | Broadway Auditorium, Buffalo | WIN KO |
| 1920-01-01 | Lockport Jimmy Duffy | WWWWLW | Broadway Auditorium, Buffalo | WIN |
| 1917-07-18 | Young Battling Nelson | LWLWDW | Auburn | DRAW |
| 1917-07-13 | Young Fisher | WLWWWL | Arena, Syracuse | LOST |
| 1917-06-29 | Young Fisher | WWLWWW | Arena, Syracuse | WIN |
| 1917-05-10 | Tommy Ferguson | LLDWWD | Town Hall, Scranton | DRAW |
| 1917-04-23 | Jack McCarron | DLWDWW | Coliseum, Toledo | LOST |
| 1917-04-20 | Young Fisher | LWDLWW | Arena, Syracuse | WIN Technical knockout |
| 1917-04-02 | Zulu Kid | LWWLWW | Broadway Auditorium, Buffalo | WIN |
| 1917-03-31 | Young Battling Nelson | LWWWLD | Union A.C., Buffalo | WIN |
| 1917-02-12 | Harry Greb | WWWWWL | Broadway Auditorium, Buffalo | LOST |
| 1916-12-18 | Jack McCarron | WDDLDD | Flower City A.C., Rochester | WIN |
| 1916-11-17 | Harry Greb | WWWWWW | Broadway Auditorium, Buffalo | LOST |
| 1916-11-15 | Frankie Brennan | LWLWLW | Windsor | WIN Points |
| 1916-11-10 | Jack McCarron | WDWDDL | Dayton | DRAW Points |
| 1916-11-08 | Harry Greb | WWWWWW | Carney Auditorium, Erie | LOST |
| 1916-10-02 | Jack Twin Sullivan | LLWLLL | Garden St. Arena, Auburn | WIN |
| 1916-09-25 | George KO Brown | WLLLLW | Broadway Auditorium, Buffalo | LOST |
| 1916-09-15 | Young Fisher | WWWWWW | The Arena, Syracuse | WIN KO |
| 1916-05-05 | Young Herman Miller | WWLDLW | Majestic Theater, Buffalo | WIN Technical knockout |
| 1916-04-17 | Young Herman Miller | LWWLDL | Monumental Theater, Baltimore | LOST |
| 1916-04-12 | Joe Chip | LDWWDW | Grand Opera House, Youngstown | DRAW |
| 1916-04-04 | KO Willie Loughlin | WLDWD | Bethlehem | DRAW |
| 1916-03-13 | Jack Britton | WLWWWW | Broadway Auditorium, Buffalo | LOST |
| 1916-03-06 | Frankie Fowser | WWWWWD | Heuck's Opera House, Cincinnati | WIN |
| 1916-01-31 | Lockport Jimmy Duffy | LWWWWW | Broadway Auditorium, Buffalo | DRAW |
| 1916-01-01 | Ted Kid Lewis | WWWLWW | Broadway Auditorium, Buffalo | DRAW |
| 1915-12-25 | George Chip | DWWLWW | Columbia A.C., Scranton | WIN |
| 1915-12-09 | Jackie Clark | LDWLLW | Scranton | LOST |
| 1915-12-03 | Soldier Bartfield | WDWLWW | Broadway Auditorium, Buffalo | WIN |
| 1915-11-29 | Terry Martin | LWLLLL | Washington Rink, Rochester | WIN Technical knockout |
| 1915-11-25 | Harry Baker | WWLWWD | Town Hall, Scranton | WIN |
| 1915-11-23 | Battling Kopin | WWWLDW | Sporting Club, Bradford | DRAW |
| 1915-09-20 | Jack Toland | DLLLLL | Tamaqua | WIN |
| 1915-09-17 | Jimmy Tighe | WLLWWW | Baseball Park, Buffalo | WIN Technical knockout |
| 1915-06-21 | Jack Twin Sullivan | LWLLWL | Buffalo | WIN |
| 1915-05-07 | Young Herman Miller | WWWWLD | York | WIN |
| 1915-05-03 | George KO Brown | LDL | People's Theater, Cincinnati | WIN |
| 1915-04-26 | Joe Chip | DDDWLW | Garden Club, Buffalo | WIN |
| 1915-04-19 | Al Rogers | DDWLDL | Erie | WIN |
| 1915-04-14 | Sailor Szarmanski | WL | People's Theater, Cincinnati | WIN KO |
| 1915-03-17 | Dave Kurtz | WWDDWW | Perry A.C., Erie | WIN |
| 1915-02-12 | Soldier Bartfield | WWWWWW | Broadway Auditorium, Buffalo | DRAW |
| 1915-02-09 | Young Hickey | LLLLLW | Scranton | WIN |
| 1915-01-19 | Young Herman Miller | WDWWWW | Capitol City A.C., Ardmore | WIN KO |
| 1915-01-11 | Al Rogers | LDWLDL | Miller's Hall, Buffalo | DRAW |
| 1914-12-14 | Mike Gibbons | WWWWWW | Elmwood Music Hall, Buffalo | LOST |
| 1914-11-02 | Italian Joe Gans | WDWWWW | Olympia A.C., Philadelphia | WIN |
| 1914-10-19 | Al McCoy | WWWLLW | Broadway Auditorium, Buffalo | WIN |
| 1914-10-12 | Frank Mantell | LDLLWL | Broadway Auditorium, Buffalo | WIN |
| 1914-06-10 | Jack Lansing | LLDWLL | Broadway Auditorium, Buffalo | WIN |
| 1914-05-15 | Soldier Bartfield | WWWDWW | Broadway Auditorium, Buffalo | DRAW |
| 1914-05-11 | Grant Clark | LLDWLL | Bridgeport | WIN |
| 1914-05-04 | Jack Toland | DWDLDL | Olympia A.C., Philadelphia | WIN |
| 1914-03-06 | Grant Clark | LLLDWL | Columbus | WIN Points |
| 1914-03-05 | Soldier Bartfield | WLWWWW | Elmwood Music Hall, Buffalo | DRAW |
| 1914-03-04 | Harry Baker | DLWLWL | Olympia A.C., Philadelphia | WIN |
| 1914-01-01 | Tommy Ferguson | LLWWLW | Town Hall, Scranton | WIN |
| 1913-12-16 | Hugh Ross | WWLLWD | Future City A.C., Saint Louis | WIN Points |
| 1913-11-27 | Hugh Ross | LWWLLW | Erie | DRAW |
| 1913-11-18 | Marty Rowan | LLLWLL | Saint Louis | WIN |
| 1913-11-11 | Tommy Connors | LWLL | Rochester | WIN |
| 1913-10-18 | Al McCoy | WWWWWW | Irving A.C., Brooklyn | DRAW |
| 1913-10-17 | Kid Curley | WWWDLW | Broadway Auditorium, Buffalo | WIN |
| 1913-10-09 | Tommy Connors | LLW | Erie | WIN |
| 1913-09-29 | Tommy Gibbons | WWWWDW | Elmwood Music Hall, Buffalo | LOST |
| 1913-09-22 | Tommy Ferguson | WDLLL | Town Hall, Scranton | WIN |
| 1913-05-02 | Bill Scott | LLLWLW | Broadway Auditorium, Buffalo | WIN Technical knockout |
| 1913-04-28 | Frank Logan | LLLWWW | Olympia A.C., Philadelphia | DRAW |
| 1913-04-02 | Tommy Connors | DDLLW | Scranton | WIN |
| 1913-03-25 | Leo Leonard | WLDWWW | Broadway Auditorium, Buffalo | WIN |
| 1913-03-12 | Jack Dillon | WWWDWW | Auditorium, Indianapolis | LOST |
| 1913-02-24 | Hugh Ross | LWLWWL | Columbus | WIN Points |
| 1913-01-30 | Jack McCarron | WWLWWL | Elmwood Music Hall, Buffalo | WIN |
| 1913-01-17 | Jack McCarron | WWWLWW | Olympia A.C., Philadelphia | WIN |
| 1913-01-10 | Bill Scott | WLWLWW | Elmwood Music Hall, Buffalo | WIN |
| 1913-01-01 | Emmett 'Kid' Wagner | DDLLDW | Olympia A.C., Philadelphia | LOST |
| 1912-12-05 | George Chip | WLWLWW | Broadway Auditorium, Buffalo | DRAW |
| 1912-11-28 | Joe Borrell | DLLWLW | Olympia A.C., Philadelphia | LOST |
| 1912-11-25 | Art Nelson | debut | Miller's Hall, Buffalo | WIN KO |
| 1912-11-11 | Jack McCarron | LDDWWW | Convention Hall, Buffalo | WIN |
| 1912-10-08 | Jimmy Clabby | DWWDWW | Convention Hall, Buffalo | LOST |
| 1912-09-23 | Jack McCarron | WWDWWD | American A.C., Philadelphia | WIN |
| 1912-09-02 | Jack Barrett | LLLDLD | Convention Hall, Buffalo | WIN KO |
| 1912-08-26 | Paddy Lavin | WLWDWL | Convention Hall, Buffalo | WIN Technical knockout |
| 1912-07-29 | Blink McCloskey | DLWDLL | Buffalo | WIN |
| 1912-05-31 | Mike Gibbons | WWWWWW | Victor A.C., Cleveland | LOST Points |
| 1912-05-28 | Young McCartney | WWWWWL | International A.C., Buffalo | WIN |
| 1912-05-20 | Barney Ford | DDLWLL | Gayety Theater, Baltimore | WIN KO |
| 1912-05-06 | Kid Whitman | WWWWWW | Holliday Street Arena, Baltimore | WIN KO |
| 1912-04-15 | Frank Loughrey | LLWWDL | Gaiety Theater, Albany | WIN |
| 1912-03-18 | Eddie Oliver | D | Hornell | WIN Technical knockout |
| 1912-02-26 | Tommy Gavigan | DWLDWL | Cleveland | LOST Points |
| 1912-02-14 | Al Rogers | WDWLDL | Convention Hall, Buffalo | WIN |
| 1912-02-09 | Judy Bock | DDWDDW | Eldridge Bicycle Club, Tonawanda | DRAW |
| 1912-01-27 | Young McCartney | WWLDWW | National A.C., Philadelphia | LOST |
| 1912-01-09 | Young Nitchie | LDLWWD | International A.C., Buffalo | WIN |
| 1911-12-22 | Paddy Sullivan | debut | Oneida County A.A., Utica | WIN KO |
| 1911-11-30 | Hilliard Lang | LWLDWW | International A.C., Buffalo | WIN |
| 1911-11-24 | Tommy Gavigan | DWWDWL | Cleveland | DRAW Points |
| 1911-11-17 | Billy Sherman | LWWWWL | American A.C., Brooklyn | WIN Technical knockout |
| 1911-10-25 | Hilliard Lang | WWLWLD | Olympic B.C., Toronto | LOST |
| 1911-10-13 | Paddy Lavin | WDWDD | Convention Hall, Buffalo | LOST |
| 1911-08-24 | Joe Leonard | DWLDWD | International A.C., Buffalo | WIN Technical knockout |
| 1911-07-26 | Jack Kelly | LL | Toronto | WIN KO |
| 1911-06-23 | Paddy Lavin | WWDWD | International A.C., Buffalo | DRAW |
| 1911-06-19 | Honey Mellody | DLLLLL | Toronto | WIN Points |
| 1911-05-24 | Hilliard Lang | DWDLWW | Magnolia Club, Buffalo | WIN |
| 1911-05-03 | Sailor Smith | debut | Harmonia Hall, Buffalo | WIN KO |
| 1911-04-24 | Tommy Yeates | LDDLLW | Frisco A.C., Buffalo | WIN KO |
| 1911-04-20 | Tommy Gorman | W | Capital Hall, Olean | WIN KO |
| 1911-04-08 | Jack Card | LL | National A.C., Brooklyn | WIN Technical knockout |
| 1911-04-01 | Bull Anderson | DLLWW | Boys Club, New York | WIN KO |
| 1911-03-21 | Jack Card | L | Brown's Gym, New York | WIN |
| 1911-03-10 | Joe West | DD | New Amsterdam Opera House, New York | DRAW |
| 1911-03-03 | Jack McCarron | WLWDWD | National S.C., New York | WIN |
| 1911-01-31 | Smiling Joe Kelly | LLDLWL | Brown's Gym, New York | WIN KO |
| 1911-01-28 | Young Rector | DDWLLL | Brooklyn A.C., Brooklyn | WIN |
| 1911-01-20 | Harry Powers | WWDL | Brooklyn | LOST |
| 1911-01-19 | Italian Joe Gans | WWDWDD | Brooklyn Beach A.C., Brooklyn | WIN |
| 1910-07-07 | Bull Anderson | D | Buffalo | WIN Technical knockout |
| 1910-06-07 | Judy Bock | LLDDDD | International A.C., Buffalo | LOST |
| 1910-05-20 | Tommy Hayes | D | Miller's Hall, Buffalo | WIN KO |
| 1910-05-10 | Judy Bock | WLLDDD | International A.C., Buffalo | DRAW |
| 1910-04-05 | Judy Bock | WDWLLD | Frisco Club, Buffalo | DRAW |
| 1910-03-31 | Joe Uvanni | DLWLW | Rochester | DRAW |
| 1910-02-21 | Art Mason | DWWLDW | Frisco A.C., Buffalo | DRAW |
| 1910-02-01 | Frank Carroll | WLLD | Hamilton | DRAW Points |
| 1909-08-23 | Kid Henry | WWDLWW | Grogan A.C., Watervliet | LOST KO |
| 1909-05-22 | Willie Diddles | WLWDDW | East New York A.C., Brooklyn | DRAW |
| 1909-04-02 | Jimmy Hunt | DWLWW | Brooklyn A.C., Brooklyn | LOST |
| 1909-03-29 | Andy Parker | WL | Marathon A.C., Brooklyn | WIN |
| 1909-03-27 | Felix Leroy | DWWDL | National A.C., Brooklyn | DRAW |
| 1909-03-16 | Fred Dipples | DLDWDW | Swedish-American A.C., Brooklyn | WIN |
| 1909-03-13 | Billy Landers | LLL | National A.C., Brooklyn | WIN |
| 1909-03-03 | Battling Larry Ryan | LDWD | Sharkey A.C., New York | WIN KO |
| 1909-02-16 | Bobby Paul | LW | Swedish-American A.C., Brooklyn | WIN KO |
| 1909-02-12 | Jim Mitchen | debut | Brooklyn A.C., Brooklyn | WIN |
| 1909-02-03 | Lew Meyers | LWLLLL | Sharkey A.C., New York | WIN |
| 1909-01-27 | Joe Black | LDDLD | Sharkey A.C., New York | LOST |
| 1909-01-09 | Joe Gordon | LDWWDW | National A.C., Brooklyn | WIN |
| 1908-12-19 | Harry Hill | WLLLWL | National A.C., Brooklyn | WIN |
| 1908-01-18 | George Stuckie | debut | Albany | WIN |
| 1906-03-26 | Kid Hassell | debut | Buffalo | WIN KO |
| 1906-03-14 | Frank Turner | DDWDWD | Frisco Club, Buffalo | WIN Points |
| 1905-10-10 | Kid Ryan | DLLD | Schwabl's Hall, Buffalo | WIN KO |
| 1905-10-02 | Kid Ryan | DLL | Frisco Club, Buffalo | DRAW Points |
| 1905-08-28 | Fred Friedel | WLWWL | Frisco Club, Buffalo | DRAW Points |
