Cubs' Hill using curve to get groundballs

Editor's Note: Inside Edge is a professional scouting service that supplies reports and tools regularly used by major league teams. The following look ahead is based on its scouting data:

Inside Edge: Three things to watch

1. How two young pitchers are bolstering their team's rotations
Chad Gaudin and Rich Hill have made significant impacts on their team's pitching staffs this season. Both the A's and Cubs entered the season with questions surrounding the depth of their starting five. Gaudin, who faces the Devil Rays on Friday night, and Hill (pitching on ESPN's Sunday Night Baseball) have answered some of the concerns for their respective teams. Here are some of the numbers that have made the A's and Cubs excited about their young arms: