Kansas City Chiefs wide receiver Donnie Avery has warned his side that they will still face a tough task when they come up against the Houston Texans and Case Keenum.
Keenum is poised to start his first game for the Texans to replace starter Matt Schaub, who will miss the game with an injury.
Avery played with Keenum at the University of Houston and knows all about his skill set.
He told the Kansas City Star: "He was pretty good. He's a good athlete, very smart, very agile. It's all about measurements in the NFL. I think that's what got him in."
The Chiefs are 6-0 going into their clash with the Texans on Sunday.
