Defense:
You can change your defense in two types of situations. The first is moving an outfielder to the infield and having five infielders and two outfielders. The second is the shift with two players (or three) to the right side of the infield and one in the left. There's a super minor move that is rare that it'll happen, but it's diving into the stands to catch the ball.
Extra Players:
Instead of picking the normal nine players, you have the option to play with the designated hitter. If you use the designated hitter, you can hit with the same person for the entire game unless you want to pinch hit for him. If you stick with the pitcher, there won't be a designated hitter, but once the pitcher is done, he can't bat anymore. Extra players will be used through pinch hitting or running situations. If it's a blowout or you don't want to tax your starter, you can pick a player or two for the bullpen. You can also change players for defensive purposes and upgrades too.
Favorites:
Keep your top team together through a favorites section. Thanks to Apple, you can now favorite your team and it'll be set if you are ready to use them in just one click of the button. The lineup, people and defense will be the same, unless you want to change.
Options:
Here are several options before you play an exhibition game:
Announcers - Do you want to hear play by play over the game you are playing?
Brightness - Do you want your outfielders to sometimes lose balls in the sun?
Character Duplicates - Do you want a yellow and green Yoshi or just green?
Clothing - Which uniforms or caps do you want your team to wear?
CPU Difficulty - How difficult should beating a CPU be?
Dirty Outfits - After sliding, do you want to see dirt on players outfits?
Fan Reaction - Want to hear the fans cheer and boo, plus a team roll call and player specific chants?
First To Hit - Who bats first and who pitches first?
Gimmicks - Want to be hit by a barrel or knocked out by a Chain Chomp?
Giveaways and Promotions - Want to be awarded with a Wario bobblehead or a King Boo bat?
Grass Style - Do you want a checkered style grass, regular or mushrooms everywhere?
Home Run Celebrations - Want fireworks, a giant statue to pop out or a cool handshake to celebrate a homer?
Injuries - Do you want to make players leave the game with injuries?
Mercy Rule - Do you think ten runs is hard to catch up to?
Number of Innings - How many innings you want the game to be?
Rain Delays - In a rainy game, do you want a delay or want to avoid delays all together?
Special Abilities - Do you want to see Mario's flameball or avoid it?
Stadiums - Where do you want the game to be played?
Sunglasses - Want to make players in the sun lose the ball without sunglasses on?
Switch Hitters - Do you want Bowser to be a lefty, a righty or both?
Time of Day - Do you want to play nice and early in the morning, in the middle of the afternoon, dark in the evening or pitch black at night?
Walkoff Celebration - Despite injuries, do you want to see the team jump on each other after a walkoff?
Weather - Do you want it to be sunny, rainy, cloudy, windy or snowy?
Pitches:
There will be a pitch speed counter, a pitch count counter and you can now throw splitters, knuckleballs, cutters and more pitches than you could ever before! But to make things even more wild, you will also have a small chance to throw a wild pitch in a game. Finally, now that you have an actual bullpen, blown saves will now be kept track of and noticed in the game.
Records Mode:
Keep track of all the games you played, even with blowouts against you or a perfect game that you got. You can keep track of all the fastballs you thrown or home runs you hit with one player, your favorite team or just all together. Errors will now also be kept track of through the records mode and be accounted for at the end of the game. You can unlock players by hitting for the cycle, getting a no-hitter, getting a perfect game or a shutout, depending on the situation. All of these things will now be kept track of the records mode. This will also keep track of MVPs, Season Modes and your special Baseball Code!
Scoreboard:
A minor change is an actual scoreboard somewhere in the ballpark.
Season Mode:
This will replace Mission Mode. You can play up to three teams, just like Mission Mode and play game by game until you reach the World Series. As you play, you can get scouting stars and you can unlock superstars for the players, just like in Mission Mode. The only differences about Season Mode, is that there's the World Series, divisions, playoffs, All-Star Game, Home Run Derby and other fun adjustments and ways throughout the entire season. You can restart the season and do a few trades for the Trade Deadline and choose from your roster of players. You can sign players to extensions, fire managers, play the game, get awards, get achievements, get records etc., plus being the general manager! You won't unlock all the players in one season, nor their superstars, but you will gain more and more until you unlock them all.
Walkoff Celebration:
It is an option to have a walkoff celebration, such as fireworks, the team coming together and jumping on each other or chasing the player who it the walkoff around (plus, it can give someone an injury), but it's not an option to remove a photo of the player who it the walkoff getting pie to the face.