Beech began as a consultant with the Mavericks in the 2005-06 season and rose up the chain, heading a fledgling analytics department in Dallas that helped revolutionize the usage of analytics throughout the NBA. He sat behind the bench during the Mavericks' 2010-11 championship run.
Sacramento had fired analytics guru Dean Oliver recently and settled on Beech as the replacement -- contrary to reports that they were planning to completely get rid of the department. We'll keep you updated if the Mavericks announce a replacement for Beech, who also founded 82games.com, one of the leading sites for advanced statistics.
Dallas' front office had already experienced some change this summer, although not in the basketball operations department. Longtime Mavericks' CEO Terdema Ussery resigned to accept a position heading Under Armour. Floyd Jahner, who was the Mavericks' chief financial officer since 2001, was promoted to his position.