Ravens offensive coordinator Cam Cameron has been fired and will be replaced by quarterbacks coach Jim Caldwell.
"My charge - our responsibility as a coaching staff - is to maximize the opportunities for our team to win, and we can still reach all of our goals for this season," head coach John Harbaugh said. "We have a motto we follow on this team: W.I.N. - What's Important Now - and what's important now is to find ways to get better, win the AFC North and advance to the playoffs.
"With our coaches and players, the solution is in the building. We are going to make the most of our opportunities going forward, and this change gives us a better possibility to achieve our goals."
This originally had the look of a potential breakthrough season for Joe Flacco and the Ravens' offense.
Instead, Baltimore's offense has been wildly erratic, as has Flacco, and Cameron, as had been the case in previous seasons as well, was criticized for his incorporation, or lack thereof, of running back Ray Rice into the team's offense.
The Ravens are ranked ninth in the NFL in points per game, but are just 18th out of the league's 32 teams in total offense.
"It's not about fair or unfair, right or wrong," Harbaugh said. "My responsibility is to the whole team and what's best for them right now. We need a change. Our plan and our goals are to win games, win our division and get to the playoffs.
"We have a lot of work to do, and we have the coaches and players in place to achieve our goals this season. We are working on that right now. I'm excited about where we are and where we are going."