Leading 1 – 0 entering the bottom of the 9th, the Rangers cough up the game when reliever Mike Adams gives up a two-run walk-off home run to Angels rookie Mark Trumbo. A loss by the Angels would have virtually eliminated them from contention in the AL West; with the win, they are 6 games behind Texas and still have a glimmer of hope.

On August 18, 2011 — Leading 1 – 0 entering the bottom of the 9th, the Rangers cough up the game when reliever Mike Adams gives up a two-run walk-off home run to Angels rookie Mark Trumbo. A loss by the Angels would have virtually eliminated them from contention in the AL West; with the win, they are 6 games behind Texas and still have a glimmer of hope.

Source:
Baseball Reference August 18
National Pastime
Retro Sheet
Hall of Fame
SABR Games Project
Replay The Game