David Carr in at QB for 49ers

With the score tied 10-10 early in the third quarter, another plot twist:

Former Carolina Panther David Carr is now in at QB for the 49ers.

Charles Johnson sacked 49ers QB Alex Smith at the 49ers' two and Smith stayed down. He eventually came off the field holding his left arm.

Carr came in, threw one pass on third-and-28 from the 2 that was short to an open receiver, and the 49ers punted.

For those who remember Carr, he is NOT wearing gloves this time -- he wore them at Carolina for awhile, and that became a subject of some derision after Carr's very poor play here. Carr was booed often in this stadium while here -- now we'll see how this goes.