SAN FRANCISCO -- Quarterback Colt McCoy was in full pads for the 49ers' open practice Saturday at Candlestick Park.
McCoy, who sustained a "stinger" in his right neck and shoulder area in the 49ers' exhibition opener Thursday against the Denver Broncos, wore a blue non-contact jersey during practice. Coach Jim Harbaugh said he believes McCoy could be back at full strength on Sunday.
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"Yeah, I think it was precautionary with Colt," Harbaugh said. "Sounds like he'll be full strength tomorrow."
The 49ers return to action Friday against the Kansas City Chiefs at Arrowhead Stadium. McCoy is in a competition for the No. 2 job behind Colin Kaepernck. Scott Tolzien took the bulk of the second-team snaps during practice Saturday. Also, Harbaugh said rookie B.J. Daniels will play Friday after not seeing any snaps at quarterback on Thursday.
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McCoy sustained his injury late in the second quarter when he was tackled to end a broken play. Despite his injury, he remained in the game and threw an interception.
When asked if he expects McCoy to play against the Chiefs, Harbaugh said, "Yeah, I think so in talking to Colt. He doesn't like sitting out. He doesn't like not being out there today or wearing the blue jersey. But hopefully tomorrow he'll be back in the mix."