the term "ace" was used for an elite pilot; the best of the squadron. The term is used in baseball as the best pitcher in the team's group of pitchers.
Ace means someone who excels at anything. It came from fighter aces who shot down at least five aircraft during either World War. The top pitcher in a baseball team is called an ace.
· ace (pitcher) · advance a runner
Ace was the term used for highly successful pilots.
Currently, the Yankees ace pitcher is CC Sabathia.
Tennis and baseball
usually the best Starting Pitcher in the Starting rotation, a pitcher most likely to pitch on opening day, unless he's injured