The Kansas City Chiefs traded for Seattle Seahawks running back Kenneth Walker on October 22, ahead of their Week 7 meeting. Walker's new deal is three years, $45 million with upside to $48 million, the biggest running back contract ever in free agency. Coverage frames him as a between-the-20s back who was not Seattle's goal line option, but who averages over six yards per carry on first down, the foundation of Kansas City's offense. Seattle faces the most cloud coverage of any offense in football, daring it to run, and Zach Charbonnet is expected to return with Jadarian Price back within two weeks. Whether Brett Veach overpaid for a heavy-load back with an injury history, and whether Seattle was right…