<P> If a player has been on an active major league roster for ten full seasons and on one team for the last five, he may not be traded to another team without his consent (known as the 10 & 5 rule). Additionally, some players negotiate to have no - trade clauses in their contracts that have the same effect . </P> <P> In some trades, one of the components is a "player to be named later" which usually turns out to be a minor league player . The unnamed player is included as part of a trade when the teams cannot immediately agree on a specific player or when the player is not yet eligible to be traded . In these cases, the player in question must be named within six months . Cash or some other consideration may be exchanged in lieu of the player to be named later . For example, during the 1994 Major League Baseball strike, the Minnesota Twins traded Dave Winfield to the Cleveland Indians at the trade deadline . Among the conditions of the trade were that if the Indians played no more games in 1994, "Indians general manager John Hart must write a check for $100 made out to the Minnesota Twins and take Twins general manager Andy MacPhail out to dinner ." </P> <P> Any player under contract may be placed on waivers ("waived") at any time . After MLB's July 31st at 4 pm trade deadline and through to the end of the season, a team must place a player on waivers if that player is to be traded . </P> <P> If a player is waived, any team may claim him . If more than one team claims the player from waivers, the team with the weakest record in the player's league gets preference . If no team in the player's league claims him, the claiming team with the weakest record in the other league gets preference . In the first month of the season, preference is determined using the previous year's standings . </P>

Why do mlb teams put players on waivers
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