Grass line Baseball field

the h.h.h. metrodome, showing white grass line.

the grass line, dirt of infield ends , grass of outfield begins, has no special significance rules of game, can influence outcome of game. dirt running paths between bases (and, @ 1 time , still in parks, between pitcher , catcher) have existed since beginning of game, although not mentioned in rule books until around 1950, , specifications flexible. in addition providing running path, grass lines act visual aid players, umpires , fans may better judge distance center of diamond. ball may take tricky bounce off dirt area or edge between dirt , grass. multiple world series championships (including 1924, 1960 , 1986) have been decided or heavily influenced erratic hops of ground balls.

in artificial turf stadiums, infield dirt placed around bases , around pitcher s , batting areas, referred sliding pits. in configuration, grass line designated white arc. among major league baseball fields, rogers centre last stadium maintain type of configuration , reconfigured full dirt infield starting in 2016 mlb season.

in college baseball parks artificial turf fields, entire field (along possibly pitcher s mound) made of turf, parts of field containing dirt instead merely being clay-colored turf.