throw away

"1. To lose a game because of poor pitching or poor throwing; e.g., 'Smith threw that game away by walking three batters' or 'Jones threw away a game by making that error.' 1ST USE. 1902 (The Sporting Life, July 12, p.3; Edward J. Nichols). 2. To make a wild throw; e.g., 'In his haste to retire the runner, Smith threw the ball away.'"
Paul Dickson, The Dickson Baseball Dictionary