"I'm very concerned," Suggs said after the Ravens' 19-16 loss to the Pittsburgh Steelers.
"This has been very rare with this franchise that we've been under .500, especially with the exception of the first game. We can't kid ourselves anymore. We got a tremendous amount of work to do."
Suggs later added, "We have a state of emergency now. We can't let no more of these games go by losing by two [points] and then losing by three. We have to have these games."
Baltimore is the first defending Super Bowl champion to have a losing record after seven games since the 2006 Steelers. The Ravens (3-4), who have a bye this week, trail the AFC North-leading Cincinnati Bengals (5-2) by two games.