What has worked well for my baseball practice drills is an infield drill. This baseball drill works on accuracy as well as conditioning.

Start with a player on 1st, one on 2nd, and the rest of the team form a line at 3rd. The baseball coach hits the ball to 3rd who then throws to 2nd who throws to 1st who throws home.

Each fielder follows his throw and must be ready when the baseball is hit to the next player in line at 3rd. The player on 1st runs behind home plate to 3rd and gets in line.

After a few warm up rounds we then have a contest. You are eliminated by either a fielding error at 3rd or a throwing error to any base. Once you get down to three players the man on first must sprint directly to 3rd and be ready to field the ball. With 2 players left we sprint from 3rd to 2nd until the last man is standing error free.