Changing of Guards Gary Payton for Ray Allen trade tops busy day in NBA. sports_nba_payton_gary.jpg 60x45 p0 lock_icon.gif webpage.gif http://sportsillustrated.cnn.com/ 10457825172560 SI.com lock_icon.gif webpage.gif http://start.real.com/rd?url=http://smilparse.real.com/showcase/1pubs/channels/nba/nba.smi&adcode=none 10457825172561 NBA.com lock_icon.gif lock_icon.gif headline