Question: Which running back played during the 2017 Kansas City Chiefs season and was released after 9 seasons? 
Sentence (from "2017 Kansas City Chiefs season"): The 2017 Kansas City Chiefs season is the franchise's 48th season in the National Football League, 55th as the Kansas City Chiefs, the 58th overall the fifth under head coach Andy Reid, and first under general manager Brett Veach.
Relevant evidence: Yes