Title:
Having a BallTheme: types of balls are hidden in a word of a phrase
Good Ones:Diamond gambit {and theme} HIDDENBALLTRICK
Writers PENS
By the Way:The hidden ball trick is hardly used in college and professional baseball because it requires a baserunner to leave the safety of a base before he has seen who has the ball --- not too bright.
RATING:

Three grins = Loved it; Two grins = Enjoyed it; One grin = A bit bland for my taste; One teardrop = Not much fun