Sluggball, a 4-on-4 baseball competition co-founded by former Philadelphia Phillies general manager Ruben Amaro Jr., is ...

Sluggball, a 4-on-4 baseball competition co-founded by former Philadelphia Phillies general manager Ruben Amaro Jr., is ...

a 4-on-4 baseball competition co-founded by former Philadelphia Phillies general manager Ruben Amaro Jr., is expected to debut in May and tour minor league stadiums this season. Sluggball focuses ...

FILE - Philadelphia Phillies general manager Ruben Amaro Jr., speaks during a baseball news conference Thursday, Dec. 20, 2012, in Philadelphia. PHILADELPHIA (AP) — Sluggball, a 4-on-4 baseball ...