The City of Seattle filed suit against the Sonics yesterday in King County court asking the judge to enforce the city's lease with the Sonics for Key Arena and prohibiting the Sonics from leaving Key Arena before the end of the lease in 2010. The city filed suit in response to the Sonics' ownership filing of a request for arbitration of their claim that the lease permitted them to move the team out of Seattle before the 2008-09 season because the city has breached the lease. The Sonics...