Losing four of their first five games has forced the Ravens to take a hard look at themselves heading into Week 6.

Scheme and lineup changes have not been ruled out, according to Head Coach John Harbaugh.

“We’ve got a lot of decisions to make, a lot of planning to do,” Harbaugh said Monday after evaluating Baltimore’s 44-10 loss to the Houston Texans. “The urgency is high. I’ve got a long list, based on how the game went.”

Harbaugh was asked specifically about possible changes on the offensive line. According to Pro Football Focus, left guard Andrew Vorhees (49.9), right guard Daniel Faalele (42.4), and left tackle Joe Noteboom (42.3) all earned sub-50 grades against Houston.

“Everything’s on the table,” Harbaugh said. “There are guys in that area where they still have to prove themselves. They are the starters because they have earned that, to a point, but you’ve got to keep earning that. You’ve got to keep getting better. You can’t plateau. If we were hoping for you to make more progress as a player and it’s not happening, at some point in time, somebody else is going to get a chance.”

Cooper Rush, who threw three interceptions, played the entire game at quarterback against Houston. If Jackson is sidelined for the second straight week, Harbaugh did not rule out Tyler Huntley seeing action.

“Consider everything,” Harbaugh said. “Every part of it to try to get the win. That’ll be talked about the next 24 hours.”

Harbaugh gave a further assessment of Rush’s overall performance. Besides his three interceptions, Rush completed 14 of 20 passes for 179 yards and drove the Ravens down the field on the game’s opening drive.

“I thought he handled it well,” Harbaugh said. “I don’t like the result. I think Cooper would probably tell you that the late throw interception to [Jalen] Pitre early, that was not a good one. He’d want that one back.

“The tipped ball was kind of crazy. It’s been one of those years so far. You’ve got to think it’s going to turn, think we’ll start getting some interceptions with some crazy plays, some tipped balls for touchdowns.”