Continuity: At the end of the movie, right after Willie Mays Hayes has been called safe at home, he jumps up and runs out to Jake Taylor, and as they celebrate, his batting helmet disappears and reappears between shots.
Continuity: When the Indians are playing Oakland in the "national television" game and Mike Rexman (Oakland), is at the plate the sun angle changes drastically between when Jake goes out to talk to Rick Vaughn and the last pitch of the game.
Continuity: In the game against Oakland, when Rexman steps up to the plate, right after he hits the ball he drops the bat. In the next shot he has it in his hand again.
Revealing mistakes: At the opening game there is nobody in the stadium. A clock in the scoreboard reveals that it is 10:40am, too early for Major League Baseball games.
Errori geografici: The stadium that the Cleveland Indians play their home games in throughout the movie is actually the old Milwaukee County Stadium, former home of the Milwaukee Brewers. Some billboards/ads in the stadium were not removed, like advertisements for area radio stations 94 WKTI and 620 WTMJ.
Continuity: The necklace on Vaughn's chest as he's being kissed goodbye by Mrs. Suzanne Dorn moves between shots.
Continuity: The same fan comes out of the stands onto the field twice.
Continuity: In the top of the 9th during the one game playoff against the Yankees, the stadium clock reads 10:20 PM as Vaughn is coming in from the bullpen. In the bottom of the 9th right as the Duke comes in from the bullpen, the stadium clock still reads 10:20 PM.
Continuity: In the final playoff game, as Cerrano waits at the plate with Dorn on first in the 7th inning, there is a brief wide shot of the field, and the bases are empty.
Factual errors: When Pedro Cerrano gets mad at Harris in the locker room he shouts "¡Chíngate Cabrón!" Cerrano is supposed to be Cuban, but that expression is Mexican Spanish, rarely heard in Cuba.
Continuity: The Stroh's and Old Milwaukee Beer signs on the back fence of the spring training camp are replaced by Miller signs in one shot.
Incorrectly regarded as goofs: The Spring Training site for the Indians is in Tucson, Arizona, according to the advertisement on the taxi Jake Taylor gets out of. While it has since moved, this was correct at the time of the film.
Continuity: In the movie, Lynn's last name is Westland. In the credits, her last name is Wells.
Continuity: At the end, when the Yankees' first baseman is throwing home, the home plate umpire has no hat on. His hat is on in all other shots.
Continuity: In the final game against the Yanks, the # 37 player is hitting, Jake Taylor then throws to 1st base to pick off the #37 player. The #37 player appears later in the game, this time being referred to by a different name by Harry Doyle.
Continuity: When Dorn gets his hit in the 7th inning of the playoff game, he rounds first base and the first base coach is #2. When he gets back to the base Leach (the first base coach) is #16.
Continuity: When Dorn (#24) gets his hit in the 7th inning of the playoff game, the shot of the base runner rounding first base shows his number as #8. When his face is shown again, his number is back to #24.
Revealing mistakes: Obvious stunt runner (longer hair) for Dorn as he rounds first base during the playoff game.
Continuity: For Serano's home run in the playoff game with the Yankees - in a portion of the shots the bat is perfectly clean and shiny and the next second it is dirty and does not look as though it has ever been cleaned.
Continuity: There number of fans in the bleachers during the game against the Yankees fluctuates wildly. In the sky shot above the stadium, there are none. During the game, the stadium is full. Later, there is an empty section in the middle.
Revealing mistakes: During Manager Lou Brown's opening-day locker room speech, there is a flopped shot of Jake Taylor. The team name is obscured but the "Chief Wahoo" logo is backwards and on the opposite sleeve.
Factual errors: There are members of the New York Yankees wearing numbers 32 and 37. Both of these numbers have long been retired.
Errors made by characters (possibly deliberate errors by the filmmakers): When the manager is talking to Vaughn in his office, he refers to a picture of Nolan Ryan over his left shoulder, but when he stands up next to it, to test Vaughn's eyesight, it is actually a picture of Sandy Koufax.
Continuity: When the guy hits a home run and the fans are arguing that it's too high or too hard and then the other guy says, "Who gives a shit, it's gone," the words don't match his mouth.
Factual errors: Harris gives up a double in the top of the 9th inning, which represents the 8th hit of the game for the Yankees. He walks the next hitter and relieved by Vaughn who throws three straight heaters to end the inning. When the Indians are up in the bottom of the ninth, the scoreboard shows that the Yankees have nine hits when, in fact, they only have eight.
Audio/video fuori sincrono: In the Indians locker room prior to the opening game, Ricky Vaughn is sitting in a chair and nervously flipping and catching a baseball into the air with one hand. Jake Taylor comes over and says, "Relax kid, we've got 161 of these games left to go." On the next flip, Vaughn is supposed to be rattled by Taylor's comment and miss the catch (evidenced by the audible "thud" of the ball on the floor). However, if you look at the bottom of the frame, you can actually see Vaughn still catch the ball in his hand.
Continuity: During spring training, after the game against the Cubs, when players are looking to see if they got cut, Cerrano takes the snake and rubs the face of it on the paint on the locker. There is already a circle painted on the locker, and Cerrano makes a cross inside the circle with the snake. When the camera changes views, there is no cross on his locker.
Continuity: In the last game, Dorn throws to a right handed first baseman. There is then a long shot of the players leaving the field and the first baseman is obviously left-handed.
Continuity: When Dorn first arrives in camp he pulls a white golf bag from his car. Later on, when Serrano "borrows" a golf club cover (to cover his bat) from Dorn's bag, the bag is brown.
Revealing mistakes: After Vaughn strikes out Haywood to end the top of the 9th inning, the Yankees first base coach is still seen in the 1st base coach's box as the Indians enter their dugout to begin the bottom of the 9th inning. In reality, the coach would have left the field right away.
Continuity: When Taylor is in Lynn Wells boyfriend's apartment, his beer-glass goes from half-filled to three-quarters filled.
Errors made by characters (possibly deliberate errors by the filmmakers): Whenever a base runner is in scoring position, catchers always give two sets of signals to prevent the other team from stealing signals and tipping off the batter. Yet, in the final playoff game, while the bases are loaded, catcher Jake Taylor is only giving one set of signals to pitcher Rick Vaughn.
Varie: In the bottom of the ninth, when Taylor bunts, and Willie Mays Hayes goes from 2nd base to home, he clearly misses 3rd base as he makes the turn towards home