One of the softball throwing drills we use at the beginning of practice is called the Diamond Drill. It is meant to be fast paced and provides conditioning as well.
It works like this:
Everyone lines up at 3b with two players at 1B.
Each girl will take a grounder and makes a throw to 1B.
After throwing to 1B they go and cover 1B.
After everyone goes through the line at 3B the drill is repeated for SS, and 2B making throws to first.
On balls hit to 2B the girl playing 1B must yell out “flip” or throw” depending on how close the 2B is to 1B when she catches the softball. After we complete the infield, the line goes to RF and 2 girls go to 2B. The right fielder takes a pop fly or grounder; crow hops and makes a throw to 2B.
This is repeated with CF throwing to 3B and LF throwing to home. We go through this softball drill twice at the beginning of each softball practice.