Bonus rule
Former Major League Baseball contractual rule

The bonus rule was a contractual rule affecting major league baseball intermittently between 1947 and 1964, meant to prevent teams from assigning certain players to farm teams. The rule stipulated that when a major-league team signed a player to a contract with a signing bonus above a certain threshold, the team was required to keep that player on their active roster. Any team that failed to comply with the rule lost the rights to that player's contract, and the player was then exposed to the waiver wire.
The public source identifies “Bonus rule” as former Major League Baseball contractual rule. This brief keeps that definition visible, then builds a research path around Bonus, rule and Former.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 22, 2026. The first chronological checks are 1947 and 1964.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Bonus rule” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.