Signs of the Time

本片是一部美国纪录片片，上映于2008-08-23，由导演，由理查德·德莱福斯/Larry Barnett/Danny Litwhiler主演。

剧情简介：A documentary based on how hand signals came about in baseball. Who initiated them and their usefulness.

类型：纪录片 / 悬疑 / 运动

地区：美国

演员：理查德·德莱福斯 / Larry Barnett / Danny Litwhiler