Josh McCown is considered to be "day to day" with a shoulder injury and likely will be held out of Wednesday's practice, Browns coach Mike Pettine said Monday.
The veteran's status for Sunday's game against the Arizona Cardinals at FirstEnergy Stadium will be determined at a later date.
"We'll see how he progresses later in the week," Pettine said.
McCown, in an interview session with reporters by his locker Monday, focused his attention on Sunday's end result as opposed to his personal health.
"Sore but getting better, but I think disappointment probably outweighs all of that," McCown said. "Just disappointed in how we played."
McCown, who deferred all other injury-related questions to Pettine, was knocked out of Sunday's 24-6 loss to the Rams with a little more than 5 minutes to play in the fourth quarter. Defensive end William Hayes hit McCown's arm as he attempted a throw, jarring the ball loose and sending McCown down to the Edward Jones Dome turf.
Earlier in the game, McCown banged his elbow on a wall lining the stands and took a hard shot from Rams linebacker Mark Barron a few plays before the hit that knocked him out of the game.
"Credit to his toughness, his resolve, but our guys knew it watching the film, we've got to protect this guy," Pettine said. "You can't have your quarterback going through a game like that. I don't care if he's Josh's age (36) or he's 23. That's not good business. You've got to protect your quarterback."
Despite the constant pressure, McCown completed 26-of-32 passes for 270 yards, fumbled twice and was sacked four times. Johnny Manziel came in for McCown and threw 4-of-5 passes for 27 yards.
On the season, McCown has completed 66.8 percent of his passes for 1,686 yards, eight touchdowns and three interceptions.
"I thought (McCown) was accurate with the ball, made good decisions. I thought he was patient," Pettine said. "I think once they got up, they played a lot of Cover 2 and gave us a lot of throws underneath and he didn't try to get greedy. I think sometimes you have a tendency to press and force the ball, and I thought he did a really good job of understanding what they were playing."