The next time the Browns practice in front of fans, they'll have a preseason game under their belts.

After a walk-through Wednesday, the Browns will hit I-71 North to FirstEnergy Stadium for their preseason opener against the Washington Redskins.

Here's what you need to know after Tuesday's practice.

1) Johnny Manziel takes day off from throwing

Quarterbacks coach Kevin O'Connell said Manziel had a "heck of a day mentally," but the second-year signal caller didn't throw a pass during Tuesday's practice -- at least not with his throwing arm.

Manziel is dealing with a sore elbow, said Browns coach Mike Pettine, who cited the extensive repetitions Manziel has had not just during practice, but in extra throwing sessions at OTAs and throughout the summer. The soreness is not considered to be serious and Manziel is expected to play against the Redskins.

"It just was an accumulation of reps, started to get a little sore," Pettine said. "We would do that with any of the guys but he was the one that was experiencing some stiffness."

Connor Shaw and Thaddeus Lewis divvied up the repetitions with the second-team offense throughout practice. Shaw took most of the snaps with the group during a competitive red-zone drill near the end.

O'Connell said he closely monitors throw counts among the four members of his group. He wasn't concerned that Manziel's fatigue showed up in his elbow rather than the shoulder, which is another common trouble spot for quarterbacks.

"Depending on how the guy throws a football and we're all different, different levels, some guys get the shoulder soreness, some get the elbow," O'Connell said. "There's nothing really to make of it other than just high volume of throws in a short amount of time."

2) Michael Bowie, Cameron Erving prepped to fill Joe Thomas' spot

The leg injury Thomas incurred at Monday's practice isn't serious. Whether or not he'll play Thursday against the Redskins will have nothing to do with it, Pettine said.

With Thomas out Tuesday, the Browns moved forward with Erving and Bowie splitting repetitions with the first-team offense. Erving, who has mostly played at right guard with the second team, worked with the unit at the start of practice while Bowie, who has almost exclusively been a second-team right tackle, took every first-team snap during the end-of-practice red zone drill. Andrew McDonald, who had been the primary backup left tackle since the start of training camp, did not practice Tuesday.

Thomas said he's enjoyed seeing the progress of both players, particularly when it comes to giving them a tip one day and seeing them follow through with it at the next practice. He called his relationship with Erving "great."

"He's a really eager learner, which is important for any rookie," Thomas said. "Some rookies you see come in and act like they know everything and they don't want to hear what you have to say to them. If I see something the coaches didn't see or just from my experience as a player, I can give him a little bit of a tip. I enjoy doing that and he's been very receptive to that."

3) Injury roundup

None of the players who sat out Monday's practice were back Tuesday, meaning their respective statuses for Thursday's game are doubtful.

Among the sidelined players were WRs Dwayne Bowe (hamstring) and Terrelle Pryor (hamstring), RBs Duke Johnson (hamstring) and Shaun Draughn (hand), DBs Pierre Desir (hamstring) and Robert Nelson Jr. (hamstring) and DL Billy Winn (ankle).

4) Some insight on the Browns' fourth-rounders

There are only so many questions to ask about the Browns' first- and second-round picks. On Day 11, Pettine handled a couple of queries about his fourth-rounders, defensive back Ibraheim Campbell and wide receiver Vince Mayle.

Campbell has been a fixture with the second-team defense working alongside Jordan Poyer in the spot typically occupied by Donte Whitner. During Tuesday's red-zone drill, Campbell made a nice, over-the-shoulders interception.

"He's very smart," Pettine said of the Northwestern alum. "Very curious to see how he is I know he'll be a big part of (special teams coordinator Chris Tabor's) plans as a core teamer. He'll get a lot of work there and he'll certainly get a good chunk of the game at safety."

Mayle has also been a second-teamer. After an admitted slow start to camp, Mayle has flashed some in recent days and hauled in one of the longest passes of Monday's practice.

Pettine circled Mayle, who sat out OTAs with a broken thumb, as a player he'll be monitoring closely Thursday.

"For us, I think he's faster in pads than we anticipated him to be," Pettine said. "He plays hard every snap, that's an encouraging thing. Good things will happen when you have that mentality but we'll see. He's one of those guys too- how's he going to respond in a game situation."

5) Other observations

-- WR Josh Lenz, who got in the end zone three times during Tuesday's red zone drill, is wearing a new number. After sporting No. 7 since he signed with the Browns in May, Lenz is now No. 17.

-- Pettine lumped Pryor in the same category as Johnson when it pertained to how important it will be to see the playmakers on the practice field before implementing them into the game plan. "We need to know what we have in both those guys," Pettine said, "And when they're not out there, it hurts us."

-- FB Malcolm Johnson (shoulder) practiced and went through 11-on-11 drills, but he sported a red, non-contact jersey.