The San Francisco 49ers have an open roster spot after placing center Daniel Kilgore and cornerback Chris Cook on injured reserve and re-signing special teams coverage ace Bubba Ventrone.
Moving Kilgore to injured reserve was expected. He suffered a broken ankle in Sunday's loss to the Broncos. Cook, meanwhile, suffered a torn hamstring. Jim Harbaugh said Monday that, with the exception of Kilgore, the 49ers would be healthy for their upcoming game, Nov. 2, against the Rams. Further tests, however, showed that Cook's injury was more severe than initially suspected.
Cook had been rotating as the fourth cornerback with rookie Dontae Johnson. Johnson, Tramaine Brock, Perrish Cox and Chris Culliver are the remaining cornerbacks on the roster. At center, rookie Marcus Martin will get the first crack at replacing Kilgore.
Meanwhile, the 49ers' open roster spot could go to Aldon Smith if the league shortens his nine-game suspension. If that's the case, Smith could be moved to the active roster as early as Monday.
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