You can edit how much money you start owner mode with with the hex editor artmoney pro v7.11:
load artmoney, then the game. then alt+tab, and click search, do a range of values search, 
and search between 4999999 and 5000000. 
change values that show up to 500 million or whatever you choose, alt+tab back to the game, 
and you have $500 million, or whatever you want.

Making of Owner Mode feature:
Buy all stadium upgrades in owner mode.

Pitching:
If a good prospect is doing poorly in the minors, try hiring a new pitching coach or batting coach to put some spark back into their game.

Easy MVP points:
In dynasty mode, after simulating a season and before you go to the playoffs, save the game. Then, keep reloading it. 
This will give you a lot of MVP points.

Heroes Team:
Unlock each of the 25 Heroes Team players.

Increase body size:
Enter kenny lee (case-sensitive) as a created players name to increase and fully change the player's size. 
Each bicep and other parts of the body can be changed differently from the other.

Legendary Players:
Save your profile once you have 5000 MVP Rewards points. 
Buy a Legendary Player and DO NOT save your profile. 
Add the Legendary Player to a team and save your roster. 
Then Load your profile and you will still have 5000 points and the Legendary Player 
will still be on the team. 
If you repeat the cheat you will be able to get all the Legendary Players on your existing teams.

Legends Team:
Unlock each of the 25 Legends Team players.

Bad hitter:
Select the "Create A Player" option. Create a player named erik kiss (case-sensitive). 
The player will have a skinny bat that will break every time and send a little dribbler to the pitcher for a sure out. 
Also, you cannot bunt with him; it will just go foul.

Big hitter:
Select the "Create A Player" option. Create a player named keegan paterson, jacob paterson, or isaiah paterson (case-sensitive). 
The player will have a very large bat. 
He will hit a home run or a hard line drive every time you make contact, no matter what his stats.

Camden Yards sign:
On top of the clock in the outfield at the actual Camden Yards us a sign that reads "The Sun", 
which refers to the newspaper The Baltimore Sun. In the game, it reads "The Run".

Easy grand slam:
Trade all fast players like O. Cabrera, Ichiro, and Carlos Beltran to one team. Create the the jacob paterson player and sign him. 
Then, put the fast players as the first three hitters and the slugger as the number four batter. Have the first three players bunt. 
While this happens, take control of the other team so they cannot throw the ball. 
All of the fast players will be on base and the slugger will be up. 
Most of the time he will hit a grand slam.

Midget Player:
Create players with one of the following names in lower-case: 
keegan paterson, jacob paterson, or isaiah paterson to create a midget player.