Pep O'Brien (Joseph R. Mattioli) boxer
- bouts
- 82
- won
- 30
- lost
- 40
- draw
- 11
- Status
- inactive
- Division
- lightweight
- Debut
- 1920-06-25
- Height
- -
- Reach
- -
- Age
- 53
- Born
- 1897-00-00
- Death
- 1950-03-28
- Nationality
- USA
| Date | Opponent | Last Opponents' Results | Place | Result |
|---|---|---|---|---|
| 1935-11-08 | Earl Weaver | WLLLLL | Kalurah Temple, Binghamton | LOST Points |
| 1935-10-25 | Dom Rizzo | WWWLDL | Kalurah Temple, Binghamton | WIN KO |
| 1933-03-20 | Tony Occipenti | WLWWWW | Town Hall, Scranton | DRAW Points |
| 1932-11-15 | Swede Anderson | debut | Northside Arena, Pittsburgh | WIN Points |
| 1932-06-17 | Billy Hooe | WDWLLW | Twin City Arena, Laurel | LOST Points |
| 1931-10-16 | Lou Simoni | LLWWLD | Falcons Hall, Old Forge | DRAW Points |
| 1930-10-20 | Billy Pollock | LLWLLL | Town Hall, Scranton | LOST Technical knockout |
| 1930-05-09 | Durant Boyce | WLLLL | Watres Armory, Scranton | WIN Points |
| 1930-05-02 | Jimmy Diamond | debut | Armory, Pittston | WIN Points |
| 1930-04-22 | Johnny Kelly | WWWDLW | Casino Hall, Carbondale | LOST Points |
| 1930-04-03 | Jack Serafin | debut | Watres Armory, Scranton | WIN Technical knockout |
| 1929-01-28 | Solly Seeman | WLWDL | Town Hall, Scranton | LOST Technical knockout |
| 1928-06-29 | Larry Brignolia | WWWDWW | Erie | LOST Technical knockout |
| 1928-06-15 | Red Chapman | LWWLWW | Ocean Park Casino, Long Branch | NC No Contest |
| 1928-05-07 | Young Terry | WWWLWW | Arena, Trenton | LOST Points |
| 1928-02-20 | Chuck Liddell | WWWDWW | Chestnut Street Auditorium, Harrisburg | LOST Points |
| 1928-01-27 | Jimmy Goodrich | DDLLWD | Elks Club, Williamsport | LOST Points |
| 1928-01-02 | George Nielan | LDWLL | Elks Club, Williamsport | WIN Technical knockout |
| 1927-11-01 | Bobby Mays | WLDWWW | Arena, New Haven | LOST Technical knockout |
| 1927-09-29 | Tony Perry | WWLWLD | Town Hall, Scranton | LOST Points |
| 1927-08-22 | Mickey Chapin | DLLWWL | Town Hall, Scranton | WIN KO |
| 1927-08-08 | Mickey Chapin | WDLLWW | Town Hall, Scranton | WIN |
| 1927-07-18 | Billy Pollock | LWWWWD | Town Hall, Scranton | LOST Points |
| 1927-06-06 | Billy Pollock | LLWWWW | Town Hall, Scranton | DRAW |
| 1927-05-09 | Tommy Farley | WLWDWW | Arena, Philadelphia | DRAW Points |
| 1927-04-06 | Al Gordon | LWWWWW | 108th Field Artillery Armory, Philadelphia | LOST Points |
| 1927-03-17 | Al Gordon | WWLWWW | Olympia A.C., Philadelphia | LOST Points |
| 1927-03-07 | Danny Cooney | LWWLWW | Arena, Trenton | LOST |
| 1927-02-11 | Steve Culver | LLWWLW | Roseland Palace, Bridgeport | WIN Points |
| 1927-01-18 | Tony Stevens | WWW | Casino Hall, Carbondale | WIN Technical knockout |
| 1926-12-30 | Eddie Lyko | DDWWWW | Archbald A.C., Archbald | DRAW Points |
| 1926-12-16 | Jack Duffy | WWWLWL | K. of C. Auditorium, Windsor | LOST Points |
| 1926-12-07 | Johnny McDonough | LLWWWW | Pioneer A.C., Carbondale | DRAW Points |
| 1926-11-29 | Andy DiVodi | WWWWWW | Newark | LOST KO |
| 1926-11-18 | Jack Manley | WWWDWW | Hampton Hall, Wilkes-Barre | LOST Unanimous decision |
| 1926-10-18 | Bobby Tracey | WLLWWW | Town Hall, Scranton | LOST Majority decision |
| 1926-09-14 | Alex Hart | LLWLLL | Armory, Reading | LOST Points |
| 1926-08-30 | Johnny Ceccoli | LWLWLL | Town Hall, Scranton | DRAW Points |
| 1926-08-23 | Babe Ruth | LWWWWL | Town Hall, Scranton | LOST |
| 1926-08-02 | Andy Tucker | LLLLWL | Town Hall, Scranton | WIN Corner retirement |
| 1926-06-21 | Bucky Boyle | WWWWWW | Lyric Theatre, Allentown | LOST Points |
| 1926-05-20 | Bucky Boyle | WWWWWW | Watres Armory, Scranton | LOST Split-decision |
| 1926-04-16 | Ruby Goldstein | WWWWWW | Pioneer Sporting Club, New York | LOST Technical knockout |
| 1926-03-01 | Johnny Ceccoli | DLLWLW | Town Hall, Scranton | WIN Points |
| 1926-02-15 | Sidney Glick | WLWWLL | Public Hall, Cleveland | LOST |
| 1925-11-30 | Mickey Chapin | WWLWLW | Town Hall, Scranton | LOST Majority decision |
| 1925-10-12 | Joe Dundee | WDDWWW | 104th Regiment Armory, Baltimore | LOST Points |
| 1925-09-28 | Tommy Farley | WLDWWW | Waltz Dream Arena, Atlantic City | LOST |
| 1925-09-21 | Luke Carr | WWWLWW | Broadway Auditorium, Buffalo | LOST KO |
| 1925-08-14 | Jimmy Goodrich | WWWWWW | Watres Armory, Scranton | DRAW Points |
| 1925-08-03 | Billy Pollock | DWWWDW | Town Hall, Scranton | LOST Points |
| 1925-07-13 | Billy Pollock | LDWWWD | Town Hall, Scranton | LOST |
| 1925-02-17 | Edouard Baudry | LWLLLD | Roma | WIN Points |
| 1925-02-01 | Oreste Moglia | WWWW | Foligno | WIN Points |
| 1924-11-17 | Billy Pollock | WWDWWD | Town Hall, Scranton | LOST Points |
| 1924-11-03 | Cuddy DeMarco | WLWLLW | Motor Square Garden, Pittsburgh | LOST Points |
| 1924-10-02 | Cuddy DeMarco | WDWWLW | Palisades Rink, McKeesport | WIN Split-decision |
| 1924-09-27 | Dick Conlon | WDWDWL | Cambria Fairgrounds, Ebensburg | LOST Points |
| 1924-09-02 | Tim Droney | WWLLLL | Hazleton | WIN Split-decision |
| 1924-08-08 | Dick Conlon | WWWDWD | Crystal Beach Arena, Johnstown | LOST Points |
| 1924-06-30 | Mickey Papner | DLWLWD | Ben Franklin Arena, Kenilworth | DRAW Points |
| 1924-06-27 | Bud Christiano | DLLWL | Erie | DRAW Points |
| 1924-05-26 | Teddy Meyers | LWLLWW | Town Hall, Scranton | LOST Points |
| 1924-04-28 | Willie Devanney | LDWWLL | Town Hall, Scranton | WIN Points |
| 1924-04-02 | Tommy O'Brien | WWWWWL | Pioneer Sporting Club, New York | LOST Points |
| 1924-03-18 | Pete August | WWLWL | Pioneer Sporting Club, New York | LOST Points |
| 1924-02-25 | Willie Devanney | DWLDWW | Town Hall, Scranton | WIN Majority decision |
| 1924-01-21 | Bobby Tracey | WDWWL | Town Hall, Scranton | LOST Unanimous decision |
| 1923-12-28 | Lew Tendler | WWWWLW | 109th Infantry Armory, Scranton | LOST Unanimous decision |
| 1923-12-11 | Joe Tiplitz | LWDWLL | 109th Infantry Armory, Scranton | WIN |
| 1923-11-20 | Phil Logan | DWLWLW | 109th Infantry Armory, Scranton | WIN |
| 1923-10-15 | Billy Pollock | WWWLLD | Town Hall, Scranton | LOST |
| 1923-10-12 | Canastota Bob | LWDWWL | Stone Opera House, Binghamton | WIN KO |
| 1923-09-24 | Teddy Meyers | WLWLWW | Town Hall, Scranton | LOST |
| 1923-09-10 | Lew Herman | WWWWLL | Town Hall, Scranton | WIN Corner retirement |
| 1923-08-27 | Lew Herman | WWWWWL | Town Hall, Scranton | WIN |
| 1923-08-13 | Frankie Farmer | WLLWWW | Town Hall, Scranton | WIN Corner retirement |
| 1923-07-30 | Billy Pollock | WLWWWW | Town Hall, Scranton | WIN |
| 1923-07-16 | Lew Herman | WWWWWW | Town Hall, Scranton | WIN |
| 1923-05-31 | Billy Pollock | WWLWWW | Town Hall, Scranton | LOST |
| 1923-05-25 | Harry Mitchell | WWLL | Stadium, Freeport | WIN Points |
| 1923-05-04 | Benny Valger | WWWDW | 109th Infantry Armory, Scranton | LOST |
| 1923-03-22 | George KO Chaney | WLWWWD | Adelphia A.C., Philadelphia | LOST KO |
| 1923-03-05 | Georgie Russell | WLWLWL | Arena, Philadelphia | LOST |
| 1923-03-01 | Jimmy Goodrich | LWLWDL | Town Hall, Scranton | LOST |
| 1923-02-01 | Sid Marks | DLWWLL | Town Hall, Scranton | WIN Technical knockout |
| 1923-01-18 | Johnny Rose | LLWLLL | Town Hall, Scranton | WIN |
| 1923-01-01 | Joe Ritchie | LLWWLL | Majestic Theatre, Wilkes-Barre | WIN |
| 1922-12-14 | Sailor Pacilio | WWWWLW | Town Hall, Scranton | DRAW |
| 1922-11-30 | Nate Isaacman | LWWWLW | Town Hall, Scranton | LOST |
| 1922-11-22 | Frankie Farmer | WWWWWW | South Main Street Armory, Wilkes-Barre | LOST |
| 1922-11-03 | Mixer Mitchell | WWLLLW | Arena, Syracuse | LOST Points |
| 1922-10-19 | Joe Weber | LWLLWL | Town Hall, Scranton | WIN |
| 1922-09-28 | Battling Johnson | LWLLDL | Town Hall, Scranton | WIN Technical knockout |
| 1922-09-04 | Al Murphy | WWWWL | Athletic Park, Scranton | DRAW |
| 1922-08-02 | Young Ralph Brady | DLLLL | Athletic Park, Scranton | WIN |
| 1922-06-29 | Young Ralph Brady | DLLL | Town Hall, Scranton | WIN |
| 1922-05-08 | Eddie Dempsey | LWWLWD | Athletic Park, Scranton | WIN |
| 1922-04-17 | Clonie Tait | DLWWWW | Olympia A.C., Philadelphia | LOST |
| 1922-03-17 | Frankie McCarthy | WLWLWW | Strand Theater, Pittston | DRAW |
| 1922-01-11 | Red Dolan | WLWWLL | WIN KO |
|
| 1921-12-23 | Luke Tenner | LWLWLL | Town Hall, Scranton | LOST |
| 1921-11-04 | Willie Ritchie | WLDDWW | Town Hall, Scranton | LOST |
| 1921-10-06 | Sailor Pacilio | LLWWWD | Town Hall, Scranton | LOST |
| 1921-08-11 | Willie Stanton | WWLLWL | Athletic Park, Scranton | LOST |
| 1921-06-14 | Willie Stanton | WWWLLW | Athletic Park, Scranton | WIN KO |
| 1921-06-07 | Gob Seaman | L | Johnson Field, Johnson City | DRAW Points |
| 1921-05-17 | Andy Smith | WWWLLL | South Main Street Armory, Wilkes-Barre | WIN |
| 1921-04-22 | Willie Stanton | WWWWLL | Athletic Park, Scranton | LOST |
| 1921-03-24 | Joe O'Neill | DLWWLL | Town Hall, Scranton | WIN Technical knockout |
| 1921-01-27 | Dick Wilson | WLLLDW | Town Hall, Scranton | WIN KO |
| 1920-12-09 | Johnny Zook | WWWW | Town Hall, Scranton | DRAW |
| 1920-11-25 | Tommy Buck | LWLLWW | Town Hall, Scranton | WIN |
| 1920-06-25 | Silent Cawley | L | Athletic Park, Scranton | LOST |