49ers LB Brooks out with lacerated kidney

San Francisco 49ers outside linebacker Ahmad Brooks is out at

least two weeks because of a lacerated kidney.

Brooks was hurt during Friday’s morning practice. The injury

originally was diagnosed as a bruised rib before tests revealed

more extensive damage Saturday.

The 49ers gave no timetable for Brooks’ return and said he will

be re-evaluated in two weeks.

Brooks, who signed a two-year, $4.225 million contract extension

in March, had a breakout season last year when he recorded a

career-high six sacks and tied a franchise record for a linebacker

with four forced fumbles.

Brooks became a regular during third-down pass-rushing

situations over San Francisco’s final six games, recording five

sacks in the last five games. The 49ers were grooming him for a

more extensive role this season.