The Rawlings baseballs used when Jim Morris was called up to the Devil Rays have the dark blue Major League Baseball logo on them. The movie takes place in 1999, these balls weren't used until 2000. The baseballs Morris actually used would have been Rawlings American League baseballs with light blue printing.
Several of the players seen in the Rangers game (including the Rangers' Alex Rodriguez and the Devil Rays' Tanyon Sturtze) were not with their respective teams when Jim Morris made his major league debut on September 18, 1999.
When the MVP player of the Roughnecks is batting as the last batter of the big game and hits the 1-1 pitch a mile but foul - he starts waving his arms "Carlton Fisk style" - but he's waving them in the direction (his left) as if he is wanting the ball to go foul and obviously would want it to go fair.
The number of people in the stands at The Ballpark in Arlington. This is because the scene where Jimmy makes his first walk to the mound was filmed during the seventh inning stretch of a real Rangers game, but all of the pitching shots were done after the game. When Jimmy is on the mound looking around, you can see the stands behind him are empty.
At The Ballpark at Arlington, the bat used by the batter prior to Jim Morris coming in to pitch, changes between shots. It starts black, but changes to natural wood. The batter gets a hit with the natural wood bat but when the runner scores he steps over a black bat.
The Tampa catcher is wearing grey shin guards and a grey chest protector in every shot up to and including Jimmy Morris taking the mound in Texas. However, when he begins pitching, the catcher is wearing a black chest protector and shin guards.
While Jimmy is in the bullpen waiting for his big chance at The Ballpark at Arlington, the stadium announcer claims that the game is in the sixth inning while the scoreboard shows that the game is still in the fourth.
When Jimmy is putting the first article up on the bulletin board, he places it towards the center of the board in the medium shot. However, when the camera shows a close-up of the article, it is up on the top near the frame of the board.
When Jimmy is at the bar watching his interview on TV, the newscaster says that Jimmy found he was throwing 95 mph when pitching batting practice for the high school team he coached. Jimmy didn't find out he was throwing that hard until he tried out for the Devil Rays.
In the beginning Major League scenes, the home plate umpire is clearly using a "scissors" stance and wearing #26. When Jimmy Morris enters the game, the home plate umpire is using a "box stance" and his number is ending in 2.
When pitching in Triple-A, Jim Morris is a member of the Durham Bulls, of the International League. The team is playing in the stadium for the Round Rock Express, in Round Rock, TX. Round Rock is Triple-A in the Pacific Coast League. Teams from the two Triple-A leagues do not play each other.
In the background of the field at Big Lake High School, there is an advertisement for a tire barn on the scoreboard. The telephone number listed includes the area code of 512. The area code for the real Big Lake is not in the 512 area, but the 325 area code. This part of the film was filmed in Thorndale, Texas, north of Austin and in the 512 area code.
When Jimmy is pitching in the pros, a close up is shown of his feet as he prepares to deliver a pitch. The cleats shown around the rim of his shoe are the hard rubber type used in youth leagues or recreational ball - not the metal cleats used in pro ball.
When warming up for his first big game Jimmy is shown in the right field bullpen with a large SONIC advertisement behind him. At the Ballpark in Arlington that is the home bullpen. The visitors bullpen is in left field. The movie was probably filmed in the right field bullpen because it is closer to the stands. The visitors bullpen is set far away from the stands, making the scene with his family impossible from this bullpen.
During Jim Morris' pitching tryout there several close-ups of his hand holding the baseball. One close-up shows his right hand holding the ball even though he is a left-handed pitcher. But pitchers will often remove their gloves and rub the ball with the opposite hand to remove sweat or rosin from the ball.
While pitching toward the camera at practice at the gravel yard, you can see the ball never leaves Jim Morris' mitt, and once you can see him drop the ball before "throwing" it. (This is done so he doesn't hit the camera.)