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| Name | Team | Age |
| Dave O"Neill | Retired (1952, Age 25) | Died (1992, Age 65) |
| Drafted | Position | Bats/Throws |
| Round 5, Pick 75 (1952) |
C | R/R |
| League | Option Years
|
Majors Service Time |
| Amos Otis League | 0 | 1 years (0 games) |
| Total Rating
|
Arm | Range |
| Contact vs R | Contact vs L | Speed |
| Power vs R | Power vs L | Bunting |
| Endurance | Velocity | Control |
| Leadership
|
Mentor vs RHP
|
Mentor vs LHP
|
| Health
|
Injured Days
|
Birthday |
| 0 | 7/13/1927 | |
| WS Rings | WS Appearances | LCS Appearances |
| 0 | 0 | 0 |
| Alt Pos (---) | Alt Pos (---) | Alt Pos (---) |
| (0.0 %) | (0.0 %) | (0.0 %) |
Stats | Splits | Playoffs | Positions | Improvements | Past Skills | Awards | Fielding | Game Log
| Year | Vs | G | AB | H | 2B | 3B | HR | RBI | BB | SO | OPS | OBP | SLG | AVG |
| Total | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 |
| Date | Transaction |
| 1957-11-01 | Dave O"Neill has retired from the Free Agency Pool |
| 1955-04-01 | The Baltimore Orioles have waived Dave O"Neill. |
| 1955-03-03 | The Baltimore Orioles have promoted Skip Bulling to the major league team. The Baltimore Orioles have promoted Tom Moriarty to the major league team. The Baltimore Orioles have promoted Dallas Logan to the major league team. The Baltimore Orioles have sent Dave O"Neill to the minors. The Baltimore Orioles have designated Jack Coleman for assignment. The Baltimore Orioles have designated Tom Bonner for assignment. |
| 1955-03-03 | The Baltimore Orioles have promoted Dave O"Neill to the major league team. The Baltimore Orioles have promoted Jack Coleman to the major league team. The Baltimore Orioles have sent Skip Bulling to the minors. The Baltimore Orioles have sent Dallas Logan to the minors. |
| 1955-03-03 | The Baltimore Orioles have sent Dave O"Neill down to the minors. |
| 1955-03-03 | The Baltimore Orioles have promoted Dave O"Neill to the major league team. The Baltimore Orioles have sent Tom Moriarty to the minors. |
| 1955-03-03 | The Baltimore Orioles have promoted Tom Moriarty to the major league team. The Baltimore Orioles have sent Danny Latimer to the minors. The Baltimore Orioles have sent Dave O"Neill to the minors. The Baltimore Orioles have sent Dan Gibbons to the minors. The Baltimore Orioles have sent Sammy Miles to the minors. |
| 1954-04-01 | The Baltimore Orioles have promoted Dave O"Neill to the major league team. |
| 1954-03-01 | The Baltimore Orioles have renamed David Niilson to Dave O"Neill. |
| 1954-03-01 | The Baltimore Orioles have acquired David Niilson from the waiver wire. |
| 1953-05-09 | The Baltimore Orioles have waived David Niilson. |
| 1953-05-09 | The Baltimore Orioles have acquired David Niilson from the waiver wire. |
| 1953-05-04 | The Milwaukee Mayhem have waived David Niilson. |
| 1952-04-04 | The Milwaukee Mayhem have renamed Lance Dorish to David Niilson. |