Report Kevin Kolbs concussion may be career-endin

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The Buffalo Bills added free-agent Matt Leinart to their depleted quarterback roster Sunday,[link widoczny dla zalogowanych], and the decision is beginning to make more sense.
The team fears Kevin Kolb's concussion—sustained in the Bills' preseason game against the Washington Redskins Saturday—may be career-ending,[link widoczny dla zalogowanych], .
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Kolb's injury occurred when the quarterback was accidentally struck in the head by an opponent's knee while scrambling,[link widoczny dla zalogowanych], Graham reported.
EJ Manuel, who is out for the rest of the preseason with a left knee injury,[link widoczny dla zalogowanych], remains slated as the starter for the Bills' regular-season opener,[link widoczny dla zalogowanych], .
With Manuel and Kolb out,[link widoczny dla zalogowanych], Leinart will fill an immediate need at quarterback for the Bills' preseason finale Thursday against the Detroit Lions.