Chargers' running back LaDainian Tomlinson believes that the team's game against the Patriots this Sunday is a must-win. "We can't afford to go 2-4," Tomlinson said Monday. "There's too tough a road ahead. We can't keep on doing this and saying this. It's at a point where it's becoming a must win for us if we're going to do the things that we set out to do at the beginning of the year." Tomlinson, who is nursing an injured toe, hasn't been himself through the first five weeks of the season, but the rushing attack hasn't been the team's only problem.