The Browns and Steelers are heading into Week 4 with two questions that matter just as much as the matchup itself: whether Joey Porter Jr. is ready to go, and whether Cleveland’s offensive line can hold up long enough to let the game unfold on its own terms.

Porter was a full participant in practice for a second straight day on Tuesday, but that still does not settle his status for Thursday’s game in Cleveland. Mike McCarthy said Wednesday will be the first time the Steelers evaluate Porter at full practice speed this week, which makes that session the real checkpoint before kickoff.

If Porter does play, he is not expected to carry a full workload after taking part in only two walk-throughs. That leaves Pittsburgh with a familiar kind of uncertainty: a player trending in the right direction, but still needing one more day of proof before the team can know how much it can ask of him.

The rest of the Steelers’ injury report adds to the picture. Brandin Echols is listed as limited because of a concussion, Jalen Ramsey is limited with a wrist injury, and Rico Dowdle did not practice because of a toe injury.

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On the other side, Cleveland is treating this game as a direct test of its protection plan. The Browns’ offensive line is preparing for a productive Steelers pass rush in Week 4, and the timing matters: this is the first divisional game of the season for both teams, with the Browns hosting the Steelers at Huntington Bank Field on Oct. 1.

Pittsburgh’s front is the part of the matchup Cleveland has been building around. The Steelers have eight sacks this season, tied for the sixth most in the NFL, and the Browns’ preparation has centered on the players who drive that pressure. Cameron Heyward, a four-time All-Pro First Team defensive tackle, and former Defensive Player of the Year T.J. Watt headline the group, with Alex Highsmith also part of the challenge.

That is the assignment Cleveland’s offensive line is trying to sort through before the first snap. Tytus Howard said he could see himself matched up with Watt frequently and noted that Watt’s pass-rush tendencies are different from other players. T Spencer Fano is also part of the group working through the Steelers’ pressure looks as the Browns build their plan for the week.

The Browns’ unofficial depth chart gives that preparation a baseline, but it does not remove the uncertainty that comes with a matchup like this. Cleveland has to line up its protection while Pittsburgh waits on Porter’s Wednesday test, and the game may turn as much on those availability decisions as on the rivalry label attached to the matchup.