Tommy O'Brien boxer
- bouts
- 20
- won
- 12
- lost
- 6
- draw
- 1
- Status
- inactive
- Division
- middleweight
- Debut
- 1926-04-08
- Height
- -
- Reach
- -
- Age
- -
- Born
- -
- Death
- -
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1931-05-20 | Harry English | WLWWLW | Roi Davis Auditorium, Toledo | LOST Technical knockout |
| 1930-05-28 | Charlie Saunders | LL | Reservoir Park, Springfield | WIN KO |
| 1930-04-17 | George Daw | D | Springfield | WIN Points |
| 1930-04-01 | Bill Gabriel | WLLWLL | Springfield | WIN Technical knockout |
| 1930-02-05 | Charlie Saunders | L | Elks Auditorium, Springfield | WIN KO |
| 1929-11-07 | Chester Bush | WLLLLL | Springfield | LOST Points |
| 1929-08-12 | King Levinsky | WWDWWW | Logan Square Baseball Park, Chicago | LOST Unanimous decision |
| 1929-04-12 | Bobby Hamilton | debut | Convention Hall, Hutchinson | LOST |
| 1929-03-21 | Freddie Gilbert | LL | Convention Hall, Hutchinson | WIN KO |
| 1929-02-18 | Billy Atkinson | LLWWWW | Wichita | LOST Technical knockout |
| 1928-09-03 | Spec Smith | WDLLW | Wichita | WIN KO |
| 1928-03-05 | Speedy Sparks | LWWLL | Wichita | NC |
| 1928-02-24 | Homer Sheridan | WWDDLW | Wichita | LOST |
| 1928-02-06 | Sid Young | WLLLWW | Wichita | WIN |
| 1928-01-23 | Warnie Smith | WWWWLL | Pampa Athletic Arena, Pampa | WIN |
| 1928-01-20 | Bucky Harris | L | Convention Hall, Hutchinson | WIN |
| 1928-01-03 | Chester Pasche | debut | Dodge City | WIN |
| 1927-12-07 | Jack Elkhart | WLLLLW | Convention Hall, Hutchinson | WIN |
| 1927-10-15 | Danny Garth | LLWWLW | American Legion Athletic Club, Roundup | WIN KO |
| 1927-09-16 | Alex Knaub | DWDWWW | Fair Grounds, Billings | LOST Points |
| 1927-07-22 | Charlie Watt | W | K. of C. Hall, Omaha | WIN Points |
| 1927-06-17 | Sailor Ed Kelly | W | Spalding | WIN Points |
| 1927-03-25 | Alex Knaub | debut | Babcock Theater, Billings | DRAW Points |
| 1926-07-22 | Young Dempsey | WLWWWL | Manhattan | LOST Points |
| 1926-06-17 | Young Dempsey | DWLWWW | Grand Opera House, Great Falls | WIN Points |