The Kansas City Chiefs defense just suffered yet another blow.





This might be the worst so far.





Starting outside linebacker Justin Houston has been placed on the PUP list as he continues to rehab from an ACL injury.





He'll be out at least six weeks, leaving Kansas City awfully thin at the linebacker position.

The #KCChiefs placed OLB Justin Houston (ACL) on PUP list, so he’s out 6 games. They are hopeful for a midseason return. — Ian Rapoport (@RapSheet) August 30, 2016

Houston had 30 tackles, 7.5 sacks and 2 interceptions last year. When healthy, he is one of the most feared pass rushers in the league and one of the most important players on the Chiefs.





Unfortunately this is not the only injury news coming out of Chiefs' camp today.





Josh Mauga, an interior linebacker, will miss the season with a labral tear.

Josh Mauga is out for the season with a labral tear. — Terez A. Paylor (@TerezPaylor) August 30, 2016

Mauga had 58 combined tackles last season.

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Kansas City had one of the best defenses in the league last year, and it was expected that they'd be near the top in that department this year as well.





While they are expected to get a boost from the return of star safety Eric Berry, these injuries serve as a major obstacle.





It was reported earlier today that the Chiefs were interested in former Browns' linebacker Paul Kruger. Considering the extent of these injuries, that talk is sure to heat up.