"The resume box is still wide open at Arrowhead Stadium.

Chiefs coach Romeo Crennel and general manager Scott Pioli are looking to plug holes on their coaching and scouting staffs and emphasized Thursday the need to bring in competition for Matt Cassel at starting quarterback.

Crennel has interviewed quarterbacks coach Jim Zorn and Oakland Raiders offensive coordinator Al Saunders for the vacant offensive coordinator's job and said, "I might interview another one or two" before making a decision, perhaps early next week.

The new offensive coordinator also would have some say in the selection of a veteran quarterback — or quarterback taken in the draft — because Crennel and Pioli were adamant that there will be competition for veteran Matt Cassel, who along with second-year man Ricky Stanzi are the only two quarterbacks under contract.

"What happens in free agency remains to be seen," Crennel said. "I know competition makes everybody better, and we'll just have to see what kind of competition we're going to have at the quarterback position."

Crennel praised Cassel for leading the Chiefs to playoffs in 2010, but his stance on Thursday was a bit of a departure from the unqualified backing he gave Cassel last month when hired as head coach.

Pioli took it a step further.

"We've been saying it for three years, and I'm going to continue to say it, because it's a core part of our philosophy: There will be increased competition at every position, including the quarterback position," Pioli said. "Who that is, I don't know. Maybe it's Kyle (Orton), maybe it's another free agent, maybe it's a draft choice, I don't know."