Cassel leaves after being sacked

KANSAS CITY, Mo. -- Chiefs quarterback Matt Cassel left the field favoring his left leg after being sacked on the third play of Kansas City's 14-10 preseason loss to the Seattle Seahawks on Saturday night.

Cassel was injured the first time he dropped back to pass, dragged down from behind by Brandon Mebane after the pocket collapsed.
Cassel called timeout, then limped down the tunnel toward the
locker room with a left leg injury and didn't return.

Signed to a a six-year, $63 million contract in the offseason,
Cassel had a so-so first preseason game against Houston, then spent
last week's game against Minnesota running for his life because of
numerous offensive line breakdowns.

He was supposed to play into the third quarter against the
Seahawks and show what he can do with more of the playbook

X-rays on Cassel's leg were negative, but it's not clear if he will even be available for
next week's preseason finale against St. Louis.

The Chiefs haven't won any kind of game in nine months, a
stretch that could continue to grow if Cassel is out for an
extended period.

"We just have to get over that hump," said backup quarterback
Tyler Thigpen, who may have hurt his chances of making the team by
going 8-for-15 for 56 yards. "We had three close games that we
could have won in the fourth quarter. That was a hump we couldn't
get over last year and it kind of carried over."

Information from The Associated Press was used in this report.