Bosa was officially ruled out early in the third quarter with the Niners leading 16-7. San Francisco went on to beat Dallas, 23-17.
49ers head coach Kyle Shanahan said after the game Bosa will enter concussion protocol this week. His status for next weekend's Divisional Round matchup against the Green Bay Packers is unknown at this time.
Bosa suffered the concussion after colliding with teammate D.J. Jones on a pass rush late in the first half. Bosa drew a holding penalty on Dallas before falling into Jones. The edge rusher walked off under his own power, motioning to the 49ers fans in the crowd.
Before exiting, Bosa caused problems for the Cowboys offensive line, compiling half a sack, two QB pressures and three tackles.
With Dallas rallying in the fourth quarter, star linebacker Fred Warner suffered an ankle injury and limped off the field. Shanahan told reporters that Warner, who did not return to the game, will have further testing done on his ankle this week to determine the severity.