Back Door Cover 

In sports betting, a back door cover occurs when the team you wagered on covers the spread in the last minutes of the game. Often times this happens when the actual game is a blow out, yet the spread or line of the game is still at play.

The Giants kicked a late field goal to give me a back door cover. They lost by 10, but covered the 12 point spread.

Back Door Cover by Milt Deezy May 8, 2007

back door cover 

When a sports team comes from behind at the end of the game and covers the spread.

The Eagles pulled off a back door cover at the end of the game last night.

back door cover by CMac211 June 11, 2006