The batsman's crease is a line marked on the cricket field that indicates the area where the batsman stands while facing the bowler. It is located 4 feet in front of the stumps at each end of the pitch. The crease helps determine whether a batsman is safe from being run out or stumped, as they must remain within this area when the ball is in play. There are two main creases: the popping crease and the bowler's crease. The popping crease is the one the batsman must reach to be safe from being run out, while the bowler's crease marks the point where the bowler must deliver the ball. Both creases are essential for maintaining the rules of the game.