Apr. 22 11:57 AM PT12:57 PM MT1:57 PM CT2:57 PM ET18:57 GMT2:57 AM 北京时间11:57 AM MST1:57 PM EST1:57 PM CT22:57 UAE14:57 ET17:57 - Chancellor and the Seattle Seahawks have agreed on a contract extension that will keep the young safety with the only team he's played for through the 2017 season. Analysis: Chancellor's agent, Alvin Keels, announced the deal on his Twitter account on Monday afternoon. Keels said it was a four-year extension. The team was expected to formally announce the deal later Monday.