the 5/10 Rule whereby players who have been with a club for 5 consecutive years and have been a major league player for 10 years cannot be traded without their consent.
the roster list rules (25 and 40 man lists) which also determines who is eligible to play for a team in the playoffs and world series
tie-breaking rules for deciding which teams go to the playoffs
implementing/enforcing the expanded playing rules issued to umpires which goes into much greater detail than the official Baseball Rules . These rules are described in the '''Umpire's Manual'''.
