MINNEAPOLIS -- Major League Baseball players say they may consider whether to discuss a possible ban on chewing tobacco when they negotiate their next labour contract in two years. For now, they hope individuals decide on their own to stop dipping. Players union head Tony Clark said Monday that several of his members have quit cold turkey following the death of Hall of Famer Tony Gwynn on June 16 from oral cancer. While the use of smokeless tobacco was banned for players with minor league contacts in 1993, it is permitted for players with major league deals. The labour agreement covering 2012-16 says players may not carry tobacco packages and tins in their back pockets when fans are permitted in ballparks, and they may not use tobacco during pregame and postgame interviews and at team functions. "I think what we have been doing thus far has been a positive, and although Im not going to offer you a bargaining proposal today on chewing tobacco, we could have that conversation," Clark said Tuesday before the All-Star game. "Then we will see where the guys are and continue the education and their appreciation for or against, or what the many considerations that need to be made in the area even look like, and well have that conversation with Major League Baseball," he said. Baseball Commissioner Bud Selig, who plans to retire in January, promised "it will be a subject that theyll discuss at the next collective bargaining" but acknowledged "I understand that individuals have the right to make their own decisions." Gwynn, 54 at his death, attributed his cancer to years of chewing tobacco. "We believe that the numbers suggest that the usage has declined significantly, declined in the minor leagues, declined in the majors," Clark said during a question-and-answer session with the Baseball Writers Association of America. "Our hope is that we continue to educate guys on that the damage that dipping can do, that they will continue to decide not to dip and chew." Clark, a former All-Star first baseman who never dipped, said Gwynns death "really smacks you between the eyes, and its unfortunate sometimes, that an event like that brings that decision instead of that decision being made beforehand." No change is planned during the current labour contract. "We give the players the opportunity to make the decision that theyre going to make against the backdrop of it being legal," Clark said. "We dont condone it. They know we dont condone it. ... 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I hope to be ready so I can help the national team again." Hulk said he had the injury before the opening win over Croatia, when he was replaced late in the match, and felt it again after a few shots on goal on Sunday. He walked off the field without a limp, but then sat down on a bench and lowered his head in apparent dismay. Hulk, who plays for Zenit in the Russian league, put his hand on his left leg when team medical staff arrived to treat him. A few moments later he went to the locker room accompanied by one of the teams doctors. "I was feeling down when it happened because yoou always think about the worst," Hulk said.dddddddddddd "But then I talked to the doctors and they told me that it wasnt anything too serious. Im going to undergo treatment and hopefully Ill be able to play." The Brazilian federation said Hulk wouldnt need additional tests and would travel as planned with the rest of the squad to the northeastern city of Fortaleza later Sunday. "At a World Cup you have to overcome every challenge," Hulk said. "We prepare our entire lives to fulfil our dreams of playing in the tournament. Im feeling well." If Hulk is ruled out, 21-year-old Shakhtar Donetsk striker Bernard would be his likely replacement. Chelseas Ramires is also an option. Brazil had been injury free since it started its World Cup preparations in late May, but Sunday was a tense practice session in Teresopolis, outside Rio de Janeiro. Bernard stayed on the ground for a few moments after a foul by David Luiz, and the defender was later hurt in a challenge by midfielder Luiz Gustavo. Both players were down briefly but recovered. Coach Luiz Felipe Scolari ended the training session after the hard contact between Luiz and Gustavo. ' ' '