http://www.BaseballQA.com/BaseballInfo/BaseballCollectibles/index.php http://www.BaseballQA.com/rss/BaseballCollectiblesTips.xml Baseball Collectibles from Baseball QA Generally, the core of the ball is made of rubber, cork or a mixture of the two and sometimes, layered. Its constriction varies. Around these are various linear materials that include twin and yarn. Sometimes wool is also used. A leather cover is used put on in two pieces and is stitched together Sat, 28 Oct 2006 11:59:39 -0600 http://www.BaseballQA.com/BaseballTips/2.php http://www.BaseballQA.com/BaseballTips/2.php The strike zone is the conceptual rectangular area over the home plate, which defines the boundaries through which a pitch must pass in order to count as a strike when the batter does not swing. --- permission must be obtained from editor Bob Hanneck to re-publish --- keywords: Baseball | Softball Sat, 28 Oct 2006 11:59:39 -0600 http://www.BaseballQA.com/BaseballTips/14.php http://www.BaseballQA.com/BaseballTips/14.php Everything here is © Baseball QA, Copyright 2006, All Rights Reserved Worldwide.