Manziel is on the field and in uniform, but he's resting his arm just like he did Aug. 11 before playing in the preseason opener two days later. The Browns will take Tuesday off to break from training camp, so he'll receive another day of rest then.
Offensive coordinator John DeFilippo isn't worried about Manziel's arm.
"No, I'm not," DeFilippo said Monday morning. "Johnny has probably got what 30 or 40 percent of the other quarterbacks in the league have right now -- sore elbows, sore shoulders. There's a lot of wear and tear on those guys in terms of their arm.