The outfield is a sporting term used in cricket and baseball to refer to the area of the field of play further from the batsman or batter than the infield. The term is also used in football (soccer) as an adjective describing any position other than that of goalkeeper.
In cricket, where the ball is far more likely to stay low against the ground than in baseball, the condition of the turf has a major effect on the speed at which the ball travels through the outfield. On a slow outfield the ball decelerates significantly, making fielding easier and batting harder — in particular boundaries are far harder to hit. This usually occurs if the playing surface is uneven or if it is damp from rain or dew. However, on a fast outfield the ball does not decelerate significantly even when rolling along the turf, often racing past the fielders and over the boundary rope. In these circumstances, batsmen find it easier to score runs quickly. Commentators often refer to the ball accelerating to the boundary on fast outfields, but this only physically occurs on grounds with a slope and on which the ball is moving downhill.