Willie Mays' first home run came off of Warren Spahn of the Boston Braves on May 28, 1951.
Willie McCovey's first home run came off of Ron Kline of the Pittsburgh Pirates on August 2, 1959.
hit a home run
Bob Gibson
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Richie Weeks' first home run as a Brewer came on June 25, 2005 off of Johan Santana of the Minnesota Twins.
Warren Spahn of the Braves on May 28, 1951.
Willie Mays go 660 Home runs
Willie McCovey was on third, Willie Mays was on second, and Jim Ray Hart was on first. All three had gotten on base by walks.
Willie Stargell of the Pittsburgh Pirates with 44.
Home Run Derby - 1959 Mickey Mantle vs. Willie Mays - 1.1 was released on: USA: 9 January 1960
Home Run Derby - 1959 Willie Mays vs- Bob Allison 1-19 was released on: USA: 14 May 1960
Home Run Derby - 1959 Jim Lemon vs- Willie Mays 1-21 was released on: USA: 28 May 1960
Home Run Derby - 1959 Mickey Mantle vs- Willie Mays 1-1 was released on: USA: 9 January 1960