Baseball, by the Rules

Infielders on the third-base side of the Chicago Cubs' infield react to a ground ball hit by Trea Turner, of the Philadelphia Phillies.
Ground Ball, Fair
When a ground ball is put into play, the main question tends to be: is the ball going to get through the infield or not? If it does, the batter will most likely be safe. If not, the odds of an out go up dramatically.