Baseball contracts are in a constant state of flux as new and exotic methods are implemented to make a player and his agents comfortable to sign the line and instantaneously become a multi-millionaire. Nothing new since contracts have long had clauses embedded within that rewarded players for reaching certain performance goals. In another age, it was not unusual for a contract to be shredded and a new one bestowed upon a player for a remarkable achievement such as tossing a no-hitter. A quick thousand dollar raise.
Contracts often have an escape clause and a baseball contract is no exception.