Justin Duchscherer had an MRI on his back that showed nothing significant.

Duchscherer, who is on the 15-day disabled list while recovering from a hip injury, had his back lock up on him while he was throwing Wednesday. He'll be shut down for roughly five days before resuming throwing. The O's had been hoping to get him back by late April, but the back injury probably pushes that timetable back.

Justin Duchscherer suffered a setback Thursday when his back locked up on him during a workout.

Duchscherer has been shut down for the next 24 hours and will pay a visit to a chiropractor on Friday. He has already been placed on the 15-day disabled list due to his ongoing recovery from hip surgery.

Orioles placed RHP Justin Duchscherer on the 15-day disabled list with a hip injury.

Duchscherer is still fighting his way back from June hip surgery and probably won't be ready for a start until late April. The O's will probably have him hang back at extended spring training to continue his ongoing rehab.

Orioles manager Buck Showalter was encouraged by Justin Duchscherer's (hip) 40-pitch Friday bullpen session.

"That's the best I've seen him throw," Showalter said. "He had a good face when he was throwing. You could tell he felt good physically, so that's encouraging. We'll see what each day brings." Duchscherer will begin the year on the DL but is hoping to be ready by April 21. "I go day-to-day," he said. "Yeah, there's something out there for me, but right now, I'm just taking it day-by-day. I see how I feel and go from there."

The Orioles are now expecting Justin Duchscherer (hip) to open the season on the disabled list.

It's probably the right move. Duchscherer is injury-prone in a major way and still fighting back from soreness in his surgically-repaired hip. He's expected to make his debut for Baltimore around April 21.

Justin Duchscherer threw off a half and full mound Wednesday for the Orioles.

Duchscherer reported no problems with his surgically-repaired hip. He's still aiming to make a start during the first week of the Orioles' regular season.

Justin Duchscherer is scheduled to throw a bullpen session Wednesday in Orioles camp.

Duchscherer has been slowed this spring by soreness in his surgically-repaired hip. He hasn't been ruled out for the start of the regular season, though, and he's aiming to make his debut on April 10 against the Rangers.

Justin Duchscherer (hip) played catch from 100 feet on Friday morning in Orioles camp.

Duchscherer performed a similar workout Thursday and reported no problems with his surgically-repaired hip. He's still aiming to be available for the first week of the regular season and the O's haven't counted him out.

Orioles manager Buck Showalter said Thursday that Justin Duchscherer (hip) is a day or two away from throwing.

Duchscherer was scratched from an intersquad appearance over the weekend due to discomfort in his surgically-repaired hip, but an MRA on Monday didn't reveal anything out of the ordinary. He's thrown just two innings this spring, so it's increasingly likely that he won't be ready for Opening Day. Chris Tillman and Zach Britton are possibilities to replace him.

An MRA taken of Justin Duchscherer's hip Monday showed nothing out of the ordinary.

Duchscherer was scratched from a scheduled intrasquad appearance over the weekend after complaining of discomfort in his surgically-repaired hip and the Orioles wanted to make sure there was nothing structurally wrong. The right-hander should be cleared to resume throwing shortly, though his status for Opening Day remains up in the air.

Justin Duchscherer will undergo an MRA on his sore left hip Monday afternoon.

An MRA is fairly similar to an MRI, but it's also slightly different in that it involves the injection of dye into the bloodstream to help in areas of the body that don't always give clear readings. Duchscherer has been feeling discomfort in his surgically-repaired hip for the last couple of weeks and is hoping to get some answers from the test results.

Justin Duchscherer was scratched from his intrasquad game Sunday after his hip began bothering him when he was warming up on flat ground.

Here we go again. Just when it seemed as though Duchscherer had made some real progress, he's had yet another setback. He's almost surely not going to be ready by Opening Day now, and it's hard to see the hip issues going away anytime soon. The talented but injury-prone right-hander just can't stay out of the trainer's room.

Justin Duchscherer (hip) is scheduled to throw three innings in an intersquad game Sunday.

Duchscherer had a bit of a scare with his hip last weekend, but tossed two scoreless innings in his spring debut Tuesday against the Phillies. There isn't much significance to the intersquad game, as Orioles manager Buck Showalter doesn't want Brian Matusz to pitch in relief again, so this is a way to keep both pitchers on turn.

Justin Duchscherer fired two scoreless innings against the Phillies Tuesday in his spring debut.

Duchscherer had been limited for a couple of weeks due to soreness in his surgically-repaired hip. He looked strong Tuesday against a decent Phillies lineup, walking only one batter and allowing only one hit. The right-hander will make his second Grapefruit League appearance this weekend.

Justin Duchscherer (hip) fared well in a 25-pitch live batting practice Saturday and will likely pitch in relief Tuesday after Brian Matusz.

The batting practice session came after a bullpen session, and afterwards Duchscherer was "all smiles," according to the Baltimore Sun's Jeff Zrebiec. "I felt fine out there," Duchscherer said. "I felt fine last time I threw. I actually felt better this time than the last time I threw. I will know more tomorrow. Basically, I just have to see how it responds." It's another good sign after the right-hander was feeling down in the dumps following some soreness in his surgically-repaired hip.

Justin Duchscherer (hip) is aiming to start Tuesday's Grapefruit League game.

Duchscherer has been limited for the past couple of weeks due to soreness in his surgically-repaired hip, but he should be cleared to begin appearing in games if everything goes well Saturday in a scheduled batting practice session. The right-hander inked a one-year, $700,000 contract with the O's late this winter.

Justin Duchscherer (hip) declared himself "perfectly fine" after throwing off both the half mound and the full mound Thursday.

"It felt like my hip was 100 percent," said Duchscherer. He plans to have a light day Friday and possibly throw live batting practice or another bullpen session Saturday. It's OK to be cautiously optimistic for now.

Justin Duchscherer (hip) is expected to throw from a mound Thursday.

Duchscherer dealt with some soreness in his surgically-repaired hip over the weekend, but he threw off flat ground with no problems Wednesday morning. We should have a better idea of the next step after he throws off the half and regular mounds Thursday.

Justin Duchscherer (hip) threw off flat ground Wednesday without any issues.

Excellent news. Duchscherer gave everyone quite a scare after reporting discomfort in his surgically-repaired hip over the weekend, but he appears to be OK for now. The next step will be for him to get back on a mound. It's not clear when that will take place.

Justin Duchscherer (hip) is hoping to throw a regular bullpen session on Wednesday.

Duchscherer threw from flat ground and a half-mound on Monday in Orioles camp and reported feeling fine. He's still in recovery mode from hip surgery but has ample time to get ready for the start of the regular season. The O's are hoping that he will lock up a rotation spot.