When Cris Collinsworth watched the Chiefs terrorize Oakland quarterback Terrell Pryor sacking him nine times last week one word kept popping into his mind.

“I kept saying ‘Wow’” said Collinsworth analyst for NBC’s “Sunday Night Football.”

“When they decide to go get the quarterback it’s a little frightening.”

The Chiefs’ defense has been ransacking and pillaging passers at a record pace during their 6-0 start and the Wows and Oohs and Ahhs can be heard around the league.

Houston coach Gary Kubiak who will throw first-year quarterback Case Keenum into his first NFL start Sunday against the Chiefs in raucous Arrowhead Stadium knows what he’s going against.

“When they get nine sacks in one game it’s kind of hard to say ‘We’ve got to block that guy’” Kubiak said. “That’s what’s so impressive. Production comes from everywhere. Not one or two places.”

Indeed the sacks are coming from linebackers linemen and defensive backs. Outside linebacker Justin Houston leads with 9 1/2 sacks; fellow outside linebacker Tamba Hali has 6 1/2; nose tackle Dontari Poe has 4 1/2 and in all 10 different Chiefs have had at least a half sack.

So far the Chiefs have a league-leading 30 sacks and are on pace to collect 80 which would shatter the NFL-record 72 by the 1984 Chicago Bears.

And in just six games the Chiefs already are halfway toward obliterating the franchise-record 60 sacks set by the 1990 Chiefs who were led by Pro Football Hall of Famer Derrick Thomas who had 20 that year and Neil Smith who had 9 1/2.

The most amazing part of the Chiefs’ sack story is that just five years ago they set an NFL record for fewest sacks in a season with 10.

Their 30 sacks are three more than the Chiefs had all of last year and they are sacking the quarterback if not hitting or hurrying him once every 8 1/2 pass plays.

“Kansas City has kind of snuck up on everybody” said former Indianapolis coach Tony Dungy an analyst for NBC. “But they have had some great defensive players. The problem in the past was the offense was turning it over so much they were never ahead in games.

“Now you’re getting to see what this defense can do … The pass rush in Arrowhead with the noise … when you get ahead and if a team has to throw and the tackles can’t hear the snap count and they have to go on a silent count there are a lot of things that go in the Chiefs’ favor.”