| 摘要 |
Bases for baseball and softball are improved to permit yielding when struck by sliding players. The bases are provided with a slot extending diagonally across the lower surface thereof. A slide member is slidably received in the slot to allow the bases to yield when contacted by a player. Spring elements are attached to the slide member and the base to cause the slide member to return to a normal at rest position of the base after being moved as a result of contact by a player.
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