Date | Transaction |
1981-11-01 | Mario Phelps has retired from the Washington Senators |
1981-08-23 | The Washington Senators have promoted Andy Dunwoody to the major league team. The Washington Senators have promoted Larry Dott to the major league team. The Washington Senators have designated Mario Phelps for assignment. The Washington Senators have designated Heinie Abernathy for assignment. |
1978-05-15 | The Washington Senators have promoted Mario Phelps to the major league team. The Washington Senators have sent Heinie Abernathy to the minors. |
1978-05-14 | The Washington Senators have acquired Mario Phelps from the waiver wire. |
1971-04-01 | The Philadelphia Phanatics have waived Mario Phelps. |