I wasn't able to make most of the codes you wanted because either too much time involved, or couldn't figure it out. I was able to make your number 1 choice though, and lots of other misc codes. I didn't actually test the "disable domination rule" code (not enough time), but it should work.
A few notes:
Please let me know if you needed the master code or not.
I made some codes for Martinez that change some of his stats. If you want, you can test them to see if they change his playing abilities in the game.
I didn't make any codes for balls or outs because it was going to take too many codes to make it work right. I did make some strike mod codes.
Let me know if you have any problems.
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MLBPA Sports Talk Baseball
A2BT-AA32
Master Code (may or may not be needed on real hardware).
AY8A-AAA2
The game will end if a team leads by 5 or more runs (it's usually 10 runs).
CT8A-AAA2
The game will end if a team leads by 20 or more runs (it's usually 10 runs).
AT8A-AA20
Disables the domination rule (the rule that ends the game if a team leads
by 10 or more runs).
KV7T-BB7G
Anytime the CPU (or player 2) scores a run, player 1 gets the points.
ACKT-BGTN
Pitcher's strength goes down much slower.
ACKT-BCTN
Pitcher's strength goes down much faster.
RGKT-A6TN
Pitcher's strength never goes down.
AEET-AADL + AEZT-AAD6
1 strike and you're out.
AYET-AADL + AYZT-AAD6
5 strikes and you're out.
BAET-AADL + BAZT-AAD6
8 strikes and you're out.
TEVA-RG7L
Pitching strength for Martinez (Los Angeles, All National West) is increased
from 48 to 99.
NTVA-RAFR
ERA for Martinez (Los Angeles, All National West) is decreased from 3.27 to
1.00
8TVA-RCFR
ERA for Martinez (Los Angeles, All National West) is increased from 3.27 to
5.00