There's a rule in the NBA they call the "five to one" rule. It speculates that a person with a positive attitude will affect five teammates in a positive way.
Similarly, a player with a negative attitude will affect five teammates in a negative way.
That's one reason players like Derrick Rose and Kevin Durant have been so coveted. Beyond their obvious and amazing talent, they are extremely professional players who receive coaching and work hard both in practice and in the offseason to get better.
On the other end of the spectrum, there are those who have a negative impact on the locker room. These are unprofessional players who poison a locker room and cause problems on their team.
Here are the 10 most unprofessional players in the NBA.