Walter William Weiss is an American former professional baseball shortstop and manager and current bench coach for the Atlanta Braves. He played in Major League Baseball (MLB) from 1987 through 2000 for the Oakland Athletics, Florida Marlins, Colorado Rockies, and Atlanta Braves. He managed the Rockies from 2013 through 2016. Weiss won the 1988 Rookie of the Year award. He was also a member of the 1998 National League All-Star Team.

In Major League Baseball, the Rookie of the Year Award is given annually to two outstanding rookie players, one each for the American League (AL) and National League (NL), as voted on by the Baseball Writers' Association of America (BBWAA). The award was established in 1940 by the Chicago chapter of the BBWAA, which selected an annual winner from 1940 through 1946. The award became national in 1947; Jackie Robinson, the Brooklyn Dodgers' second baseman, won the inaugural award. One award was presented for all of MLB in 1947 and 1948; since 1949, the honor has been given to one player each in the NL and AL. Originally, the award was known as the J. Louis Comiskey Memorial Award, named after the Chicago White Sox owner of the 1930s. The award was renamed the Jackie Robinson Award in July 1987, 40 years after Robinson broke the baseball color line.