Many baseball scenes were clearly pieced together from different clips. Near the beginning, the Giants are at bat and the Braves are pitching, but the catcher is wearing a Colorado Rockies uniform. The Giants wear road uniforms at home numerous times. A few overhead shots show a football game at Candlestick Park. One scene shows fans in the seats at Candlestick Park, but the next shot is at Coors Field in Colorado.
The hair that Gil shaves off to demonstrate the knife grows back in minutes.
Bobby gives his son, Sean, a puppy early in the film. Less than six months later, the puppy is fully grown.
When Bobby Rayburn and Juan Primo collide at the beginning, Primo, who was in left field, runs in from right field.
When Rayburn collides with Primo, Rayburn's lucky #11 necklace breaks - both the pendant and the chain are shown on the grass. Later, when Rayburn goes to bat he feels for the lucky pendant - the pendant is missing but the chain is intact around his neck.
Several times, the announcer says "Now batting, Bobby Rayburn", and Rayburn gets off the bench to approach home plate and begin the at-bat. In a real baseball game, he would come from the "On-Deck" circle as he was announced.
In the film the San Francisco Giants use the 3rd Base dugout which is totally wrong. In real life the Giants always used the 1st Base dugout at Candlestick Park. It wasn't until 2000 when the Giants new stadium (Pac-Bell Park) that they began using the 3rd Base dugout as their permanent dugout.
The Cardinals are wearing red caps when playing the Giants at Candlestick Park. Beginning in 1992 the Cardinals switched to Navy caps for Away games. It wasn't until 2012 the Cardinals started using Red caps for Away games again.
Major League Baseball rules do not allow scoreboard displays to show moving images during play.
When Robert De Niro is counting his knives in his room, he picks one and throws it at the door, the blade penetrates to the outside. Right at this moment, a Hasidim Jew walks by the door holding a chihuahua dog. It is totally impossible for Hasidim Jews to own pets. Hassidisme is a very strict religious movement and owning pets is considered a purely secular/gentile hobby.
The San Francisco Giants' number 11 is retired (Carl Hubbell). Undoubtedly the producers chose this number as to not offend the owner of a number that is still in regular use.
In the scene involving Robert De Niro's character going into the sea to rescue Rayburn's son, you clearly can see both stand-ins for De Niro and Snipes.
In the final sequence, Bobby Rayburn tries for an inside the park homer but is called out at the plate. Not only does he run the bases in a torrential downpour; it is pitch dark. At night games, stadium lights illuminate the field so it looks like daylight.
During game scenes, the crowd is clearly made up of hired background extras, as they are wearing normal, everyday clothing. At real games, the crowd would be decked out in Giants gear, a sea of orange, black, and white. Only the extras closest to the camera seem to be wearing Giants gear.
The can/bottle of beer that Gil/Curly drinks at Bobby Rayburn's home change between each shot. One shot has Gil/Curly drinking a bottle of Miller Genuine Draft and in the next shot he's drinking a bottle of Miller High Life. Another shot has Gil/Curly drinking a can of Busch Bavarian but in the next shot he's drinking a can of Olympia.
Gil/Curly is seen at several Away games at Coors Field, Dodgers Stadium, and Atlanta Fulton County Stadium in the same seat and same clothes he was wearing at the Home games at Candlestick Park.
Gil/Curly is a die hard Giants fan but he has a Colorado Rockies cap in his apartment.
When Bobby's son Sean is drowning, they show a close up of Bobby Rayburn in the water. However, the actor that they show is not Wesley Snipes, but his stunt double.
At the beginning of Juan Primo's musical montage, the announcer introduces him as "Number 11, the right fielder, Juan Primo." But it was established earlier in the film that Primo played left field.
During the last game against San Diego, the commentators refer to the San Diego pitcher as Martinez. However, the beginning of the name on the back of his uniform is briefly visible and the first letter appears to be C.