[129] Some fields—including a number of in MLB—use a synthetic area, including AstroTurf. Surface area versions may have a substantial impact on how floor balls behave and therefore are fielded and also on baserunning. Similarly, the existence of a roof (seven main league teams Perform in stadiums with permanent or http://baseball-almanac-box-scor05702.kylieblog.com/5198350/baseball-almanac-box-scores-for-dummies