KANSAS CITY, Mo. (AP) — The Chiefs signed Charcandrick West to a three-year extension and fellow running back Spencer Ware to a two-year extension Thursday, solidifying their backfield alongside Jamaal Charles.

West and Spencer proved to be a potent change-of-pace duo when Charles went down with a season-ending ACL injury last season. Charles is expected to be ready for the start of the upcoming season, but locking up West and Ware will help take some of the load off the two-time All-Pro.

It also makes running back Knile Davis a potential trade piece.

The quick, elusive West started nine games and ran for 634 yards and four touchdowns last season, while the more physical Ware started two games and ran for 403 yards and six touchdowns.