At the start of the film, when Stan Ross is walking to the plate with 2,999 hits (the first time), the announcer says "Will this be the at bat..." then states the date..."that Stan Ross hits number 3000?" TV announcer Joe Buck asked an almost identical question when Mark McGwire was sitting on 61 home runs. McGwire stepped to the plate and hit number 62, breaking Roger Maris' single-season home run record, set in 1961.
When Stan is watching the talk shows, one broadcaster says that the lady in the sausage costume who runs around the field has a better chance of getting a hit than Stan does. In July 2003, Randall Simon of the Pittsburgh Pirates was swinging a bat at the top of the dugout at Miller Park and accidentally hit a girl who was wearing one of the sausage costumes.
In the movie, Stan Ross wears uniform number 21, the same uniform number worn by Hall of Famer and Pittsburgh Pirate great Roberto Clemente - the only player in Major League Baseball history to finish his career with exactly 3,000 career hits.
Six years prior to the film's release, the Milwaukee Brewers switched from the American League to the National League and the team's main rival in the film, the Houston Astros would switch from the National League to the American League nine years after the film's release.