Have infielders start about 30-40 ft from coach or partner.
Infielder starts with glove open and finger tips on the ground.
Coach or partner rolls the ball to infielder. The glove stays in contact with the ground and open to the ball the entire time the ball is motion except for the last movement. The last movement can be up, but never down. Have infielder start at position with coach or partner hitting a fungo to fielder. The concept is the same.