The 49ers' defensive backs have received well-deserved heat this season, but daily observers believe the team's disappointing pass rush has been as much, if not more, responsible for the secondary's shortcomings. "The pass rush has just killed the secondary," one observer said. "Last year they had a lot more sacks and dominated some games because of that. But not this year." Much of the pressure was expected to come from starting OLBs Manny Lawson and Parys Haralson, but entering Week 16, they had combined for six sacks — one more than free-agent addition Travis LaBoy, who had become the LB corps' most productive pass rusher before suffering a season-ending knee injury. We hear Lawson, a free agent after the season who was expected to develop into a consistent double-digit sacker when he was drafted in the first round in 2006, is a good bet to be playing elsewhere next season.