The trading deadline grows closer by the day and teams must evaluate the talent on the market, and how a certain player will ultimately fit on their team. The clubs need to bear in mind that there are a number of players who are simply trouble.
These players have a track record of causing stirs in their own clubhouse or with the opposing team, all while providing sketchy amounts of production.
These players could add value if put in the right system or scenario, but are they really chances a team wants to take if one of these players is on the market?
That is something each team must think about in regards to acquiring each player on this list.
Melting down is nothing new for Zambrano, and that is why the Cubs would love to get rid of him if they could as they weigh the options of blowing up the current roster.
Zambrano has had it out with manager Lou Piniella, his teammates, the opposition, umpires, darn near everyone who was in his line of sight on one of his bad days.
Zambrano is in the midst of the worst year of his career, all while the Cubs owe him over $60 million off his contract, which runs through 2013 (the final year is a vesting player option).
Unfortunately for the Cubs, it appears they are stuck with Big Z, and every other team in the league is grateful for that.
B.J. Upton was thought to be the young compliment to Carl Crawford in the Rays outfield. However, Upton is in the middle of a significant year of regression both statistically and personally.
Upton's now famous altercation with Evan Longoria has pegged him as a trouble maker, and his struggles at the plate (112 strikeouts in 90 games) have raised significant hurdles for him to clear before he reaches his potential.
But it isn't just the recent blowup that is raising red flags. Upton has endured battles with manager Joe Maddon over lack of hustle, effort, and not playing the style of ball that Maddon prefers from his team.
Bradley has enjoyed what seems like countless chances to turn himself and his career around. However, despite all the chances, Bradley is hitting just .212 with eight home runs and 28 RBI in 66 games this season, all while the Mariners deal with his personal baggage.
Bradley simply walked away from the Mariners earlier this season, continuing a track record of odd and disrespectful behavior that includes flipping "the bird" to fans, begrudging the organization that signed him, confronting the other club's announcers, and more.
Padilla has become one of the most disliked guys in Major League Baseball.
Teammates have accused him of deliberately throwing at the opposition, which in turns gets Padilla's own guys plunked—to no dismay of the pitcher and to the aggravation of the rest of the team.
He has started numerous bench-clearing brawls in his career and has not been shy about playing target practice with the other team (most notably in 2006 versus the Angels).
Pierzynski has been a better citizen during his tenure in Chicago, though he has found himself in the middle of a couple of brawls. But it was during his days in San Francisco that he was slapped with the label of "clubhouse cancer."
During his days by the bay, Pierzynski reportedly ignored his pitchers' requests to review game film and criticized his pitchers to opposing batters.
"He's the cancer in here," one Giant, who requested anonymity, told the Oakland Tribune in 2004.
Manny, like Pierzynski, has been a better citizen in Los Angeles. But in Boston Manny was considered malignant in the clubhouse. Refusing to play, feigning injuries, socializing with Yankee players, disrespecting the media, and physically confronting elderly Red Sox officials spread over a period of three seasons eventually led to Manny's end in Boston.
Soriano has not been as overt in his issues, but the Cubs left fielder has at times epitomized the disappointment and lack of quality play produced by the team in recent seasons.
Soriano, who is owed over $72 million before his contract expires, has been notorious for slothful and disinterested play and subpar physical training, all while watching his numbers slip during the prime years of his career.
Yunel Escobar slid in production and personality so much that the Braves had to trade away a player they anticipated would become their franchise shortstop.
Arguments with the coaching staff, including manager Bobby Cox, and uninspired, dogged play eventually led the Braves to ship him to Toronto for veteran shortstop Alex Gonzalez. The trade simultaneously confirmed his standing as the most recent clubhouse cancer in baseball.