R.J. Archer

The severity of the injury that Seattle Seahawks backup quarterback Tarvaris Jackson sustained against the Broncos became more clear Monday with coach Pete Carroll announcing it's a high ankle sprain. The team's plan, however, is still unclear.

Carroll said the Seahawks are evaluating their options and that the team worked out an unspecified quarterback on Monday.

"We're looking at it," Carroll said.

Jackson was injured in Friday night's preseason opener when a Denver player fell on his right ankle. He limped off the field and was replaced by third-string quarterback R.J. Archer, who played the remainder of the game.

The Seahawks have another in-house option in B.J. Daniels, who was a practice squad quarterback before converting to wide receiver earlier this offseason. Carroll said Daniels will take some reps at quarterback and that as of now he would be the third quarterback if one were needed in a game.