Shareef Abdur-Rahim is listed as a center on NBA.com. Last year he started at center when Brad Miller was injured. However this year Miller is healthy and projected to start at C. I'm requesting that SAR be switched from straight center to C-F.
Here is ESPN.com's Sacramento depth chart where he's projected to start at F: http://sports.espn.go.com/nba/teams/depth?team=sac
Here is Sportsline's: http://www.sportsline.com/nba/teams/depth-chart/SAC
Here is Sacramento's team roster page on NBA.com where he's listed as a forward: http://www.nba.com/kings/roster/roster.html
I can come up with more if you like - he's listed as a CF on espn.com: http://sports.espn.go.com/nba/player...?playerId=0003
and as a forward on sportsline where they say "he also has center eligibility in most leagues.": http://www.sportsline.com/nba/players/playerpage/6455
edit: Not saying this should or should not pass (actually I think it should which is why I put it up) but it's the general format. Also, once the season starts, quotes from local news media (in this case the Sacramento Bee) supporting the position change can be useful.