Programming note: For complete coverage of the Raiders joint practices with the Cowboys in Oxnard, watch SportsNet Central tonight at 6:00, 10:30 & midnight on Comcast SportsNet Bay Area.
OXNARD -- Raiders tight end Nick Kasa was carted off the field with a knee injury shortly after the start of Wednesday's joint practice with the Dallas Cowboys.
He got tangled up with Dallas defender Ryan Smith during a 1-on-1 drill and went down. He came up clutching his left knee.
"Obviously he'll have to go in and get an MRI," head coach Dennis Allen said. "It didn't look good."
[RELATED: Marcel Reece moving to tight end?]
A week ago today, Allen revealed that projected starting tight end David Ausberry would undergo knee surgery. He had a procedure on his knee a week ago, but was seen at Wednesday's practice with a small wrap on his left knee. That's a far better sign than if Ausberry was on crutches or sporting a large knee brace. Ausberry is out indefinitely.
If Kasa misses a significant amount of time, that leaves the Raiders with Mychal Rivera, who is mostly a pass-catcher, and Brian Leonhardt, who is primarily a blocker. The team also has undrafted free agents Jake Murphy and Scott Simonson, but neither player has stood out thus far.