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WhatsApp: +86 18203695377WEBJun 26, 2023 · 1943 – Putting "jack rabbit" back into the standard baseball. Livelier Baseballs (1950s) 1953 – Cooper Union alleges "Jackrabbit" ball. 1955 – Start of the Vietnam War. 1969 – Controversy over "distinctly livelier" ball. 1974 – Cushioned Cork Center. 1976 – Rawlings becomes the official supplier of baseballs to MLB.
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