Explained: George Lombard Jr. homers in memorable big league debut as Yankees blank Cardinals 2-0

George Lombard Jr. homered in his major league debut as the Yankees beat the Cardinals 2-0

sweeper

A type of breaking pitch with significant horizontal movement

double play

A defensive play in which two offensive players are put out as a result of continuous action

save

A statistic credited to a relief pitcher who finishes a game his team wins while protecting the lead

shutout

A game in which one team prevents the other from scoring any runs

ERA

Earned run average, a measure of a pitcher's runs allowed per nine innings