Johan Rojas dashed toward the warning track in a crucial October moment, sized up the hard-hit ball that was hurtling toward the fence and made a leaping catch before crashing into the wall as the crowd at Citizens Bank Park roared in approval. Not bad for a guy who's been in the big leagues for about three months. The Philadelphia Phillies' defensive wizard is among a handful of rookies who have made a huge impact in baseball's postseason, joining Arizona Diamondbacks outfielder Corbin Carroll and Texas Rangers standouts Evan Carter and Josh Jung.