Jerry Sichting, who served as an assistant for Randy Wittman's for just one year, is leaving to join Jeff Hornacek's staff in Phoenix, according to this report:
The Phoenix Suns will add Jerry Sichting and former Sun Mark West to Jeff Hornacek's coaching staff.— John Gambadoro (@Gambo620) June 11, 2013
Sichting did a lot of work with the Wizards' big man, replacing Gene Banks in that role.
It'll be interesting to see if the Wizards commit to finding a replacement. Washington already has Don Newman, Sam Cassell, Ryan Saunders and Don Zierden on staff,
but a coach that specializes in big men would be a good addition.
UPDATE: My apologies, I got some bad info. It's Newman that spends most of his time working with the big men, not Sichting.