Shamus O'Brien boxer
- bouts
- 39
- won
- 16
- lost
- 19
- draw
- 3
- Status
- inactive
- Division
- lightweight
- Debut
- 1910-05-28
- Height
- -
- Reach
- -
- Age
- 68
- Born
- 1890-08-06
- Death
- 1959-04-13
- Nationality
- USA
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| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1926-02-19 | Jim Masters | L | Cambria A.C., Philadelphia | WIN Points |
| 1925-01-21 | Phil Trembley | debut | Armouries, Windsor | WIN Technical knockout |
| 1924-11-28 | Great Heart | LW | Toledo | LOST KO |
| 1924-11-07 | Great Heart | L | Toledo | LOST |
| 1924-10-31 | Great Heart | debut | Toledo | WIN KO |
| 1923-11-27 | Jack Darcy | LLWLLD | Lyric Theatre, Allentown | LOST |
| 1923-09-06 | Jack Rappaport | WLWWLW | McGuigan's Arena, Harrison | LOST |
| 1923-08-20 | Phil Bloom | WDDDLW | Broadway Arena, Brooklyn | LOST Points |
| 1923-07-16 | Jack Zivic | WLWWWW | Columbus | LOST Points |
| 1923-05-14 | Harry Galfund | WWWWWL | Broadway Arena, Brooklyn | LOST Points |
| 1923-04-28 | Herb Brodie | LWWWWW | Ridgewood Grove SC, Brooklyn | WIN Points |
| 1923-04-13 | Earl France | LLLWLW | Stadium, Freeport | LOST Points |
| 1923-03-15 | Pete Hartley | LLWWDW | Columbus Hall, Yonkers | LOST Points |
| 1922-11-30 | Joe Tiplitz | WWDWLW | Arena, Philadelphia | LOST |
| 1922-10-11 | Willie Doyle | DDLLWW | Town Hall, Scranton | LOST |
| 1922-10-09 | George KO Chaney | WWWWWW | Olympia A.C., Philadelphia | LOST |
| 1922-10-03 | George Brown | LLLLLW | Bolton Hall, Troy | LOST Points |
| 1922-08-07 | Italian Joe Dempsey | DLLLDD | Stadium, Freeport | WIN Points |
| 1922-07-31 | Tim Droney | WWLWLW | Lancaster | LOST |
| 1922-07-12 | Johnny Dundee | WWLLLW | Queensboro Stadium, Long Island City, Queens | LOST Points |
| 1922-06-23 | Pete Hartley | WLWWLW | Arena, Rockaway Beach, Queens | LOST |
| 1922-06-06 | Charley Pitts | LDWLDW | Queensboro Stadium, Long Island City, Queens | DRAW Points |
| 1922-04-25 | George KO Chaney | WWWWLW | Playhouse, Baltimore | LOST Points |
| 1922-03-04 | George KO Chaney | LWWWWW | National A.C., Philadelphia | WIN |
| 1922-01-14 | Earl France | WWDWWW | Ridgewood Grove, Brooklyn | LOST Points |
| 1922-01-02 | Westside Jimmy Duffy | LWDLWL | Pioneer Sporting Club, New York | DRAW Points |
| 1921-11-17 | Larry Hansen | LLLWLL | Columbus Hall, Yonkers | WIN Points |
| 1921-10-08 | Terry Mitchell | LDLLDL | Ridgewood Grove, Brooklyn | WIN Points |
| 1921-08-19 | Mickey Walker | WWWWWD | Ocean Park Casino, Long Branch | LOST |
| 1921-08-13 | Joe Kelly | LWLWWD | Ridgewood Grove, Brooklyn | WIN Points |
| 1921-04-26 | Mel Coogan | WWWWLW | Broadway Arena, Brooklyn | LOST |
| 1921-04-16 | Tony Marto | WLLLL | Pioneer Sporting Club, New York | WIN Points |
| 1921-04-09 | Benny Valger | LWWWWW | Commonwealth Sporting Club, New York | LOST Points |
| 1921-02-17 | Walter Eddy | LWWDDD | Columbus Hall, Yonkers | WIN Points |
| 1921-02-12 | Packy Hommey | LLDLW | Pioneer Sporting Club, New York | WIN Points |
| 1920-10-25 | Mickey Walker | WLWLWD | Union Square A.C., Elizabeth | WIN |
| 1920-09-14 | Mickey Walker | WWWWLW | Coliseum, Newark | WIN |
| 1920-08-24 | Barney Adair | WWLLDD | Schuetzen Park, Bayonne | LOST |
| 1920-06-18 | Vic Moran | DLLLLL | Schutzen Park, Bayonne | WIN |
| 1920-05-28 | Johnny Sheppard | WWWLLL | Schuetzen Park, Jersey City | WIN |
| 1919-11-24 | Fred Bosse | DDWDDW | Acorn A.C. Gymnasium, Bridgeport | DRAW Points |
| 1919-04-21 | Charlie Beecher | WWWWDW | Open-Air Arena, Jersey City | LOST |
| 1918-03-11 | Johnny Martin | WLWWWW | Casino Hall, Bridgeport | WIN |
| 1918-01-15 | Joe Welling | LLWWWW | Pioneer Sporting Club, New York | LOST |
| 1918-01-01 | Joe Hyland | LWWDWL | Pioneer S.C., New York | WIN |
| 1917-12-14 | Young Oscar Gardner | WLLWLD | Atlas A.C., Chicopee | LOST |
| 1917-11-03 | Harry Condon | LWWWLL | Clermont Avenue Rink, Brooklyn | LOST |
| 1917-10-13 | Joe Welling | WLLWWW | Brooklyn | LOST |
| 1917-09-24 | Paddy Burns | WLLLLL | Lenox Hall, Pittsfield | WIN |
| 1917-09-01 | Joe Kelly | LDW | Broadway A.C., Brooklyn | DRAW |
| 1917-08-18 | Frankie Callahan | WWLWWW | Broadway S.C., Brooklyn | LOST |
| 1917-07-28 | Harry Condon | LDLLLW | Clermont Avenue Rink, Brooklyn | LOST |
| 1917-07-06 | Eddie Shannon | WLLLWW | Providence | LOST Points |
| 1917-06-09 | Pete Hartley | DDWWWW | Broadway A.C., New York | LOST |
| 1917-02-23 | Stanley Yoakum | WWLWLL | Harlem S.C., New York | LOST |
| 1917-02-12 | Packy Hommey | LWLWLL | New York | LOST |
| 1916-12-23 | Willie Beecher | LLLLWL | Broadway Arena, Brooklyn | WIN |
| 1916-11-18 | Young Terry McGovern | DDWWWW | National A.C., Philadelphia | LOST |
| 1916-11-14 | Harry Pierce | WDLWLW | Hunts Point A.C., Bronx | LOST |
| 1916-10-20 | Eddie Dorsey | WLLWWW | Harlem S.C., New York | LOST |
| 1916-09-13 | Richie Mitchell | WWWLDD | Auditorium, Milwaukee | LOST |
| 1916-09-11 | Rocky Kansas | WWLWWW | Urban Liberty Park, Buffalo | LOST |
| 1916-08-26 | Frankie DeMeyer | LLLLLL | Broadway Arena, Brooklyn | WIN KO |
| 1916-08-08 | Ever Hammer | WWWWLL | Armory A.A., Boston | LOST |
| 1916-07-28 | Leo Johnson | WWWDW | Harlem S.C., New York | WIN |
| 1916-07-24 | Johnny O'Leary | WLLWLW | Airdome A.C., Rochester | LOST |
| 1916-05-30 | Vic Moran | DDLLWL | Harlem S.C., New York | LOST |
| 1916-05-17 | Frankie Nelson | WWWLLW | Grand Opera House, Youngstown | WIN |
| 1916-05-04 | Babe Adams | debut | Broadway A.C., Philadelphia | WIN KO |
| 1916-05-02 | Vic Moran | WWDDLL | Harlem S.C., New York | LOST |
| 1916-04-15 | Eddie Wagond | LLLLLL | National A.C., Philadelphia | DRAW |
| 1916-03-17 | Benny Leonard | WWWWDW | Harlem S.C., New York | LOST Technical knockout |
| 1916-02-15 | Joe Goldberg | WLLWWW | Knickerbocker A.C., Albany | LOST |
| 1916-02-11 | Benny Leonard | WWWWWW | Arena, Syracuse | LOST |
| 1916-01-25 | Harry Condon | LWWLDL | Palace A.C., Yonkers | LOST |
| 1916-01-21 | Frankie Nelson | DLWWWW | Arena, Syracuse | WIN |
| 1916-01-07 | Hugo Clements | LLLLLD | Electric City A.C., Schenectady | DRAW |
| 1915-12-21 | Knockout Brown | WWLLWW | Palace AC Yonkers | LOST |
| 1915-11-30 | Buddy Ryan | LLWWDL | Palace A.C., Yonkers | WIN |
| 1915-09-24 | Andy Cortez | DWWDLW | New Atlas A.A., Chicopee | LOST |
| 1915-06-12 | Harlem Eddie Kelly | WDWLDD | Sharkey A.C., New York | LOST |
| 1915-05-29 | Knockout Brown | DLLDLW | Broadway S.C., Brooklyn | LOST |
| 1915-05-21 | Willie Mantell | LW | 135th Street A.C., New York | WIN KO |
| 1915-04-10 | Patsy Haley | debut | Utica | LOST |
| 1915-04-07 | Frankie Nelson | WWLLLL | German Hall, Albany | LOST |
| 1915-03-30 | Bobby Wilson | WWLLDW | Knickerbocker A.C., Albany | DRAW |
| 1915-03-12 | Grover Hayes | DDDWW | Polish National Hall, Chicopee | DRAW |
| 1915-01-29 | Walter Mohr | LLWDWW | Empire A.C., Utica | LOST |
| 1914-12-18 | Eddie Ketchell | LLDLL | Polish National Hall, Chicopee | WIN |
| 1914-11-26 | Young Joey | LLLDLD | Polish National Hall, Chicopee | WIN |
| 1914-10-26 | Young Denny | LDLWLW | Schenectady | WIN |
| 1914-10-19 | Young Joey | LLLLDL | Arena, Syracuse | DRAW |
| 1914-09-24 | Kid Julian | LWLWLL | Arena, Syracuse | WIN |
| 1914-09-19 | Johnny Harvey | WWWLLD | Fairmont A.C., Bronx | LOST |
| 1914-09-04 | Harry Condon | LLWWDL | Alexander A.C., Elmsford | LOST |
| 1914-09-02 | Young Joey | DLLLL | Arena, Syracuse | WIN |
| 1914-08-24 | Hugo Clements | LLLLLL | Chadwick Park, Albany | DRAW |
| 1914-07-27 | Charley Sheppard | WWDLDD | Delphian Club, Albany | WIN KO |
| 1914-07-13 | Young Stacey | DDL | Chadwick Park, Albany | WIN |
| 1914-06-29 | George Cohan | WLLWDL | Chadwick Park, Albany | WIN |
| 1914-03-14 | Billy Kramer | LDWLWL | Queensboro A.C., New York | WIN |
| 1913-09-13 | Harry Condon | LDWLWD | Irving A.C., Brooklyn | DRAW |
| 1913-06-22 | Young Dyson | LLLWWW | Irving A.C., New York | LOST |
| 1913-06-14 | Harry Condon | DDWWWL | Irving A.C., Brooklyn | DRAW |
| 1913-05-17 | Barney Smith | WLW | Fairmont A.C., Bronx | WIN |
| 1913-03-25 | Eddie Smith | LWDWDW | Yonkers A.C., Yonkers | LOST |
| 1912-12-02 | Leach Cross | WWLLWW | Yonkers A.C., Yonkers | LOST |
| 1912-07-08 | Joe Eagan | WDWWWL | Town Hall A.C., Yonkers | NC |
| 1912-05-27 | Paddy Sullivan | WLWWDL | Leonard's Hall, Yonkers | DRAW |
| 1912-05-14 | Eddie Smith | WWWWWW | Brown's Gym, New York | LOST |
| 1912-04-06 | Paddy Sullivan | LWWDWW | Sharkey A.C., New York | WIN |
| 1912-02-26 | Harry Stone | WWWLWD | Yonkers | LOST |
| 1912-02-06 | Tommy Stagg | LWWLWD | Mount Vernon S.C., New York | LOST |
| 1912-01-02 | Young Sam Langford | LDWL | Mount Vernon S.C., New York | WIN |
| 1911-11-28 | Young Sam Langford | LDW | Mount Vernon A.C., Mount Vernon | WIN KO |
| 1911-11-13 | Johnny Kelly | WLLLLW | Malvern A.C., Bronx | DRAW |
| 1911-09-09 | Jack Smith | debut | Long Acre A.C., New York | WIN |
| 1911-03-28 | Tommy Hopkins | debut | Fairmont A.C., Bronx | WIN |
| 1911-03-01 | Leo Johnson | WWW | Olympic A.C., New York | LOST |
| 1911-02-27 | Mike Carroll | DDDDW | Olympia Boxing Club, New York | WIN |
| 1911-02-23 | Young George Fox | debut | National S.C., New York | WIN |
| 1911-02-13 | Tommy Smith | DL | Olympia Boxing Club, New York | LOST |
| 1910-10-25 | Johnny Shaw | WWL | Fairmont A.C., Bronx | WIN |
| 1910-05-28 | Kid Sweeney | debut | Schwartz Hall, Buffalo | DRAW |
