With the 2013 NBA All-Star Game quickly approaching, here are the updated NBA Team Chemistry Rankings for the 2012-2013 season. As it stands, the following head coaches have been relieved of their duties since the beginning of the season: Los Angeles Lakers: Mike Brown Brooklyn Nets: Avery Johnson Milwaukee Bucks: Scott Skiles Phoenix Suns: Alvin Gentry Other coaches thought to be on the hot seat include Randy Wittman (Washington Wizards) and Keith Smart (Sacramento Kings). 'Wild card' hot seat candidates include Lionel Hollins (Memphis Grizzlies), Dwane Casey (Toronto Raptors), and Rick Carlisle (Dallas Mavericks). In the Eastern Conference, 8 teams have records at or above .500: Miami, New York, Indiana, Chicago, Brooklyn, Atlanta, Milwaukee, and Boston. Meanwhile, in the Western Conference, 9 teams have records at or above .500: Oklahoma City, Los Angeles (Clippers), San Antonio, Memphis, Golden State, Denver, Utah, Houston, and Portland. Of last season's 16