During the 2005 offseason, following the franchise's first 50-win season in 7 years, popular head coach and former Sonic player Nate McMillan signed a contract with a Northwest rival, the Portland Trail Blazers. A month earlier with the blessing of the Sonics organization, long-time assistant Dwayne Casey, a potential successor as head coach if McMillan were not to re-sign, agreed to be the coach of the Minnesota Timberwolves. Walker and then-GM Rick Sund eventually filled the vacancy with assistant Bob Weiss. Weiss was fired in January of the following season, after going only 13-17. Walker and Sund replaced Weiss with assistant Bob Hill, who coached the team to a 22-30 record.