3 Questions worth asking after Day 9 of Ravens training camp: Is the depth chart too thin?

After taking a day nearly "off" on Thursday with a walkthrough-type practice, the Baltimore Ravens went back to working hard on Friday for the last session at The Castle before the weekend bringing back the pads and putting on more than two hours of practicing.

Day 9 of the Ravens training camp was marked by an offensive side that ended up "winning the day" according to Head Coach John Harbaugh's particular scoring system, but that doesn't mean there wasn't tensions and frustration popping up at times.

Marlon Humphrey, one of the veterans of the Flock and one of the best players in the roster, took to the mini-mic after practice as is often the case and put it simply: "Today was competitive. Defense was flying. Offense was doing stuff."

"Go Ravens, let's fly high!" Humphrey finished.

Here are the most interesting questions to ask following Day 9 of the Baltimore Ravens training camp held on Friday, Aug. 4.

1. Are injury updates worryingly becoming a daily thing?

First things first. Friday marked the first time in more than a week that the Ravens found themselves looking at a rather filled injury report.

Kyle Barber of Baltimore Beatdown had us covered with a tidy list put together as your superheroes hit the ground running on Friday.

Those PUP and NFI lists were hardly surprising. J.K. Dobbins seems to be locked into keeping his "hold-in/sit-out" thing going for some reason. Rashod Bateman is still recovering from injury. Tyus Bowser is also banged up a bit, and on and on it goes.

The problem, of course, came from the part of that tweet listing "no-list" absentees. Among them: CBs Rock Ya-Sin (expected CB2 next season) and Kyu Kelly, LBs Trent Simpson and David Ojabo (borderline and surefire starters), and S Geno Stone (second-string).

Now, that's concerning.

Ya-Sin went down on Wednesday and is expected to miss the remainder of the pre-season but not any regular-season games. Ojabo seemed to be "OK" according to Harbaugh following Wednesday's practice but he's still not returned to the field.

Harbaugh said following the practice that most injuries are "short term" and that both Ya-Sin and Ojabo "should be back soon." He revealed that Simpson had "a little issue, soft tissue," and that the franchise will "play it safe a little bit" while they "see where it goes."

The Ravens were immune to injures for the first six days of training camp. They ran out of luck on Wednesday, and it's gone downhill from that point on. They better hope no more issues will pop up or the depth chart is going to look thinner than it already does.

Speaking of which...