I didn't watch the Cardinals vs Diamondbacks game, but I know L. Allen pitched 3 innings, but come one, in an already 14-1 game?
Cardinals suck this year.
http://www.espn.com/mlb/boxscore/_/gameId/401568814
Definition
A save is awarded to the relief pitcher who finishes a game for the winning team, under certain circumstances. A pitcher cannot receive a save and a win in the same game.
A relief pitcher recording a save must preserve his team's lead while doing one of the following:
Enter the game with a lead of no more than three runs and pitch at least one inning.
Enter the game with the tying run in the on-deck circle, at the plate or on the bases.
Pitch at least three innings.
Origin
The term save was used by general managers in the 1950s, without specific parameters. It simply referred to a pitcher who entered the game with a lead and finished off a win -- regardless of score. Writer Jerome Holtzman was the first to give specific criteria to saves in the early 1960s. But saves didn't become an official stat until 1969.
http://www.mlb.com/glossary/standard-stats/save