
How to Breed Successfully in SO7
Firstly, some people may call what I am about to describe as "cheating", but this works whether you start a new save or are in the middle of a saved game.
I am on season 84 of my main flat save, I am sure others have gone thru even more seasons. I wanted to make sure what I am going to describe still works so I started a new Flat save just to make sure. The save is only 13 seasons old and I have a multiple G1 winning horse.

I started the new league save with 5 years auto advance so that there would be a good selection of gamebred stallions in the barn. I checked the 5 horses and they were all quite poor, so I sold 4 of them and kept one to help me advance thru the game quicker.
First thing I needed was money, so I used the betting cheat to quickly obtain about £10 million. If you have an established saved game, you won't need to do this next bit.
Next, I visited every Friday auction. I stayed away from the yearling and 2yo sales as these horses are often overpriced. I bought every single mare, checked their bars, especially the potential bar as I feel this is the most important bar, followed by the extra speed and cruising burst bars. I took the age of the horse into consideration but only kept mares with 50 - 65% potential. I managed to find 17 mares over the course of the season.
Now that I had a smalll stable of mares I could start to check out the gamebred stallions. I saved the game and made a copy of the save.
I looked for the best 17 stallions in the barn and then bred one stallion for each mare. I advanced quickly thru the sesson using the original horse from when I started the save.
I now had 17 foals in the barn. I wasn't really interested in the bars of the foals, I wanted to see the bars of the gamebred stallions.
If you don't already know, this is how to see the gamebred stallions bars.
Look at the green bars of one of your foals. Now at the top left of the screen you will see the names of the sire and dam. Click on the sires name and you should see the stallions green bars.
Go thru the foals one at a time and take a note of the best gamebred stallions, paying particular attention to potential, extra speed and cruising burst. These are the stallion you will do the serious breeding with.
In my case, I found a stallion with 90% potential as a 6yo and another with 97% extra speed, but the best cruising burst was only 50%.
I re-loaded the saved game I made a copy of above. Now I bred my 17 mares with the two good gamebred stallions and these were the best two foals.


I raced these two horses as 2yo, the filly won a couple of novice races but her main use was going to be as a breeder in the barn. The colt was brilliant. I raced him until he was 4yo before sending him to the barn. He won multiple G1 races.

In my main game which is 80+ seasons old, I still go thru this process every 5 years or so, looking to improve my horses.