Johnny O'Brien (Shamus) boxer
- bouts
- 25
- won
- 11
- lost
- 10
- draw
- 4
- Status
- inactive
- Division
- middleweight
- Debut
- 1925-05-14
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1930-09-30 | Eddie Wynn | WWWWWL | Casino Hall, Carbondale | WIN Points |
| 1930-07-17 | Steve Wolanin | WWLWLL | Johnson Field, Johnson City | LOST Points |
| 1929-07-11 | Johnny Delaney | LLLLLL | Johnson Field, Johnson City | DRAW Points |
| 1929-06-17 | Joe Gorman | WWDWWD | Simmons' Garden, Menands | LOST Points |
| 1929-04-30 | Tony Rock | WWWWLW | Casino Hall, Carbondale | DRAW Points |
| 1929-01-18 | Leonard Weigand | WWWWWW | Broadway Auditorium, Buffalo | LOST Points |
| 1928-09-18 | Irish Dick Curtin | WLWLLW | Casino Hall, Carbondale | WIN Points |
| 1928-07-11 | Harry Fuller | WWWWWW | Bison Stadium, Buffalo | LOST Points |
| 1928-03-27 | Billy Calpin | WWWWDW | Casino Hall, Carbondale | LOST Points |
| 1928-01-31 | High Hat McCullough | LLLLL | Casino Hall, Carbondale | WIN Points |
| 1928-01-26 | Johnny Reinberger | WW | Columbus Hall, Yonkers | LOST KO |
| 1928-01-17 | Mooch Leo | DWLLLL | Casino Hall, Carbondale | LOST Unanimous decision |
| 1927-12-05 | Mooch Leo | WDWLLL | Town Hall, Scranton | WIN Points |
| 1927-06-30 | Harry Thorpe | WLLWLL | Johnson Field, Johnson City | DRAW Points |
| 1927-06-16 | Charles Red Beal | LWWLDL | Utica Stadium, Utica | WIN Points |
| 1927-05-06 | Joe Stone | WWWWWW | Arena, Syracuse | LOST Points |
| 1927-04-21 | Jack Palucci | debut | Columbus Hall, Yonkers | LOST Points |
| 1927-04-07 | Jerry McLoughlin | L | Columbus Hall, Yonkers | DRAW Points |
| 1927-03-24 | Jerry McLoughlin | debut | Columbus Hall, Yonkers | WIN Points |
| 1927-03-10 | Freddie Clampitt | WDW | Columbus Hall, Yonkers | WIN Corner retirement |
| 1926-04-22 | Artie Marvin | WLLWLL | Columbus Hall, Yonkers | WIN Points |
| 1926-03-04 | Pedro Godin | LLLLLL | Columbus Hall, Yonkers | LOST KO |
| 1925-11-19 | Billy Rapp | debut | Columbus Hall, Yonkers | WIN KO |
| 1925-10-08 | Bunny Russie | debut | Columbus Hall, Yonkers | WIN Technical knockout |
| 1925-05-14 | Jim Lennon | L | Columbus Hall, Yonkers | WIN Technical knockout |