Though labor peace in baseball is assured through 2016, occasional skirmishes between the players and owners are inevitable.
The clubs' conduct during the free-agent market, historically a source of conflict between the two sides, again is creating tension.
The players' union, sources say, believes that some recent statements by club officials and other baseball employees violate the collective-bargaining agreement.
Rules in the CBA state that team officials cannot communicate through the media the substance of economic terms discussed by players and clubs - the facts of an offer, or whether the club will decline to make an offer.
The rules, designed to prevent clubs from influencing a free agent's market value, were adopted after the 2010-11 offseason as part of the "anti-collusion" language in the CBA.
The union, sources say, had concerns about potential violations the past two offseasons, and already has taken exception with a number of specific comment...