While ground balls aren’t the most important thing that a pitcher tends to have control over (that would be his walks and his strikeouts), the rate of ground balls does come into play into the production that a pitcher can put up. They do help limit home runs and power output in general, but they do also go for hits more often than fly balls do.
Still, ground balls are preferable to fly balls. Let’s take a look at who the Top 10 ground ball rate pitchers were among the starting pitchers in the minor leagues this past season.