The game did not make as much headway as was expected .
The rules were changed doing away with the 21 - run rule and dividing the game into nine innings , also adopting Mr. Cartwright 's original draft of the diamond .
The game did not make as much headway as was expected , so the rules were changed doing away with the 21 - run rule and dividing the game into nine innings , also adopting Mr. Cartwright 's original draft of the diamond .