INDIANAPOLIS -- The Detroit Lions wrapped up two days of joint practices with the Colts on Friday morning. Here are some observations:

-- With so much concern for the offensive tackles, not much has been said of the guards. But the Lions are having some major issues there as well. T.J. Lang still hasn't practiced on back to back days since the pads came on, and didn't appear in either of the joint practices in Indy. And the guys who are out there haven't exactly blown the roof off the joint. Graham Glasgow has been up and down on the left side, while Joe Dahl has been underwhelming -- and on Friday, he was awful. He barely got a hand on Colts DT Henry Anderson on his first rep in one-on-ones. How that happens, I don't know -- and then he did the exact same thing against Margus Hunt on his next rep. Dahl wasn't much better in two-on-twos either, where he got tossed like a rag Dahl during stunt work. (A joke so bad, it obviously came from the Detroit News' Justin Rogers.)

-- Despite Dahl's struggles, he continues to rep ahead of Laken Tomlinson at right guard. That should tell you all you need to know about Laken Tomlinson. The former first-round pick has done little to climb out of the doghouse, including whiffing entirely on a one-on-one Thursday. He was better Friday, and even won a rep, it's going to be awfully hard for him to see the field this season.

-- With all that said, it should come as no surprise that the Lions were whipped by Indy during line drills here the last two days. Their offense against Indy's defense, their defense against Indy's offense, one-on-ones, stunts, whatever. It's impossible to watch all the reps, because the offense and defense are working simultaniously on separate fields, but it's safe to say Detroit was beaten in the trenches. Every time I looked over, the defensive linemen were getting swallowed up. I saw some serious push from Haloti Ngata, while A'Shawn Robinson and Anthony Zettel were OK, but that was about it folks.

-- At this point, you're probably ready to throw your device into a toilet or something. So allow me to offer this: Greg Robinson seems to be figuring himself out at left tackle. Don't get me wrong, he still lost a couple one-on-one reps over the two days. He's no Taylor Decker, and Detroit has stuff to figure out there. But Robinson did largely hold his own in one-on-ones, including pancaking Jabaal Sheard on an attempted spin today, and looked much better in team drills. He's trending in the right direction.

-- Receiver Noel Thomas has about as much of a chance of making this team as I do, but with the preseason opener on deck -- a game in which deep reserves like him will see a lot of action -- it's worth pointing out he's made quite a few nice catches in practice. I find myself writing down his number more than I'd expect from a guy at the end of the bench, and that includes today, when he snagged a nifty little one-hander at the start of practice. Thomas and Michael Rector both have shots to make the practice squad.

-- Brandon Copeland is listed as a defensive lineman, but has received an awful lot of work as the starting linebacker on the strong side as well, including today. Copeland looks like one of the leaders for that spot, along with Antwione Williams.

-- Matthew Stafford opened full-team drills by finding Marvin Jones streaking wide open for a bomb over the middle. He wasn't quite as crisp as he was on Day 1, completing 8 of his 12 passes during team work, but the Lions continue to have bigger concerns than their quarterback, and that puts them ahead of so many other teams -- including the other one here. Scott Tolzien had a rough couple days going against Detroit's secondary.

-- As I said Thursday, TJ Jones looks like he's in the process of sewing up the fourth receiver job behind Marvin Jones, Golden Tate and Kenny Golladay. But if the Loins roll with a fifth receiver -- and I think they do, given how much younger they're going at the position -- I think Jared Abbrederis is the leader right now. He caught a few more nice passes today, including one along the left sideline on one play, and then another along the right sideline on the very next play.

-- Rookie QB Brad Kaaya continues to be up and down, but much more of the latter. He was the only Lions quarterback I saw throw a pick in the two joint practices, with Tyvis Powell getting him today.

-- Rookie Lions corner Jamal Agnew had a couple nice plays for the defense, including coming up with a pick in seven-on-sevens, and then using that plus-plus speed to chase down a deep ball and nearly pick it off during full-team drills.

-- Former Michigan All-American Marlon Jackson, who played in the NFL for the Colts, was on hand for the practice. He had a long chat with Detroit defensive coordinator Teryl Austin, who was on the Wolverines' staff when he was in Ann Arbor, and also spoke with Jim Caldwell and Detroit's defensive backs.